56 results for c for buick 231 engine found in 0.000 seconds

Notes About Air Conditioning Brackets Oil Dipstick Tubes Stage 2, 3 ... point used on the original air conditioning lower bracket. This is the one located ... simple modification of the lower A/C bracket will be required. Due to the ... tube. PRICING Assembled $2550.00 Bare Castings $1495.00 Intake Exhaust Again, as with ... , producing one of the most powerful cylinder heads in the performance market. When ... the oversized intake valve is used in conjunction with the superior exhaust runner of ... the track but are also the perfect head for the ultimate street/strip combination ... and porting have flowed almost 380 CFM at high lift and an amazing 340 CFM at ... .500 ! Stage 2 exhaust ports can be ported to 260+ CFM. Please inquire ...

INTAKE MANIFOLDS www.TAPERFORMANCE.com TA Performance Products, Inc. 480-922- ... is fed by the primaries of the carburetor and the upper portion is fed by the ... the best low and mid range power for a carbureted V6. TA 6035DP 225 cid `64 ... 300.00 TA 6167DP 231 cid `76-`78 odd even fire .......... $285. ... 00 Offenhauser Dual Port Designed for 1979 to 1987 2 3 1 2 5 2 V 6 e n g i n ... s torque over a wide rpm range. Ideal for cars trucks Jeeps. M a n i f o l d i ... s n o t equipped with EGR. Not compatible with C-3 and C-4 electronic fuel ... . Uses TA 1535 water neck. TA 5486 231/252 Carbureted V6, `79 `87 ... Fire Odd Fire Jim McCalmonts 225 V6. Converted with 231 Heads to use the Edelbrock ...

GOODWRENCH SERVICE REPLACEMENT ENGINES Section V Page 79 August 2004 ... 12360021 231 CID Reman 3.8L 1989 Oldsmobile, Buick C ... )(3.8C) 1989 Pontiac H (LN3)(3.8C) Engine-Specific Content: Balance Shaft, Front Cover, ... Filter Adapter, Oil Pump with Gears and Cover. Notes: For "E" car applications, ... transfer oil filter adapter from old engine or order new. Engine does not include ... Rocker Covers, Oil Pan, Intake Manifold or Exhaust ... INSTRUCTIONS Do not remove the engine vehicle identification plate from the ... original engine. Identification of the engine being installed must comply with any ... . Goodwrench Decals: Attach two 3800-engine decals (enclosed in instructions ...

GOODWRENCH SERVICE REPLACEMENT ENGINES Section V Page 80 August 2004 ... 12360023 231 CID Reman 3.8L 1991 Pontiac, Oldsmobile ... H (LN3)(3.8C) Buick Engine-Specific Content: Crankshaft Balancer, Crank and Cam Posn ... Sensor, Engine Coolant Temp Sensor, Front Cover, Int Air Temp ... INSTRUCTIONS Do not remove the engine vehicle identification plate from the ... original engine. Identification of the engine being installed must comply with any ... . Goodwrench Decals: Attach two 3800-engine decals (enclosed in instructions ... envelope) to clean valve covers. CAUTION: The oil pump in this engine must be ...

22 To order Call Toll Free 1.800.831.0884 or order ... online! northernautoparts.com Balancers Timing Performance Seamless ... design high strength pins, shot peened cast iron camshaft sprockets, steel billet- ... multiple keyway crankshaft sprockets. 40400 Small Block Chevy ... 44.99 40401 Big Block Chevy ... 49.99 40402 Ford 302/351W ... 49.99 40406 Chrysler 318/340/360 ... .99 Performer-Link True- Rolling Timing Chain Sets Performer-Link True-Rolling Timing ... Chain and Gear sets are for use with Edelbrock or stock cams. They ... have a solid-bushing chain for a true bearing surface that rolls with ... the sprockets, eliminating chain stretch. Crank gears are machined from ...

C E 14 14 14 14 14 14 14 14 B 14 14 14 U ... E 59 59 59 59 59 59 59 59 C m to el rin to 71 71 71 71 71 71 71 71 ... e le le 7 7 7 7 7 7 7 7 26 To order Call Toll Free 1.800.831.0884 or order ... online! northernautoparts.com Gaskets Full Gasket Kits Others ... Available Buick 953008VR 350 B, H, J, X 1968-81 ... -76 . . . . . . . . . . . . . .$35.99 Chevy 953033VR 283, 307, 327, 350 Chevy V8 to ... 1980 $29.99 953031VR 400 Chevy 1970-80 . . . . . . . . . . . . . . .$ ... 36.99 953026VR 454 Chevy 1970-79 Except H/P ... 41.99 Chrysler 953438VR 2.2L 1981-88 ... .99 953344VR 440 1972-80 (Except 440-3 Engine) . . . . . . . . . . . . .$36.99 Ford ... Included Kit Gaskets Others Available Buick KS2636 231 A, 9 RWD 75-82 ... 52.99 Chevy KS2600 265, 283, 302, 307, 327, 350 57 ...

specials engine overhaul specials amc 258 6 cyl 71 88 ... v8 71 76 $275.00 buick 231 v6 77 84 w/14 bolt pan $ ... 140.00 231t v6 77 84 w/14 bolt pan turbo $185. ... v8 70 76 $260.00 cadillac 472/500 v8 68 76 $ ... 290.00 chevrolet 173 a v6 80 84 $ ... 91 $204.00 235 6 cyl 55 62 $230.00 250 ... 6 cyl 66 84 $175.00 262 ... z 87 90 vin b n 86 92 $200.00 262 c v6 vin z 86 $200.00 ... 67 $130.00 292 6 cyl 63 89 $155.00 305 ... 110.00 305 b d dish piston v8 w/cfi vin 7 e f g h q s u 81 85 $ ... 130.00 305 b ft flat top piston v8 w/cfi vin 7 e f g h q s u 81 85 $ ...

specials deluxe engine rebuild kit specials amc 258 6 cyl 71 ... v8 71 76 325.00 buick 231 v6 77 84 w/14 bolt pan ... 190.00 231t v6 77 84 w/14 bolt pan turbo 240. ... v8 70 76 320.00 cadillac 472/500 v8 68 76 ... 375.00 chevrolet 173 a v6 80 84 ... 85 91 270.00 235 6 cyl 55 62 325.00 250 6 ... cyl 66 84 220.00 262 a ... z 87 90 vin b n 86 92 260.00 262 c v6 vin z 86 260.00 ... z 87 90 260.00 283 sb chevy 185.00 292 6 cyl ... 165.00 305 b d dish piston v8 w/cfi vin 7 e f g h q s u 81 85 ... 165.00 305 b ft flat top piston v8 w/cfi vin 7 e f g h q s u 81 85 ...

ignitions electric ford super edis coil packs these coils feature advanced ... specialized silicone magnetic steel cores along with optimized winding resistance ... delivery 10-15 more energy than the oem coils specialized high temperature epoxy ... and vibration while increasing thermal conductivity.these are direct plug replacement for oem ... coils.they feature bodies and/or secondary towers ... yellow and feature brass secondary contacts except direct fire coil on plug ... applications horizontal primary connection 140035 1989-04 ford edis 6 cylinder ... 83.99 140036 1998-00 ford edis 6 cylinder 86.99 140018 ... 1998-99 ford edis 4 cylinder 54.99 140028 1999 1/2-04 ford ...

models is positive protected against forward and backward movement and has the ... of bonded rubber to eliminate spinning chevrolet 872021 90° v6 sb v8 w/6 1/4 dia ... 187.99 872041 350 gen 111 ls1 camaro firebird internal $190.99 872042 350 ... gen 111 ls1 camaro firebird internal w/10 underdrive ... 872043 350 lt1 1993-97 internal use w/crank flange hub 872015 872016 or 872049 ... lt1 1993-97 with 10 underdrive use w/crank flange hub 872015 872016 or 872049 ... 151.99 872047 350 gen 111 ls1 ls6 corvette internal 190.99 872048 sb 400 w/7 ... 177.99 872050 350 gen 111 ls1 ls6 corvette w/10 underdrive internal ... 190.99 872055 350 gen 111 ls1 camaro friebird w/25 underdrive internal ... 190.99 872058 350 gen 111 ls1 ls6 corvette w/25 underdrive internal ... 190.99 chrysler 872037 318-340 internal ...

timing harmonic balancers great care is taken in the design and assembly of ... 594-005 594-034 594-004 594-158 594-117 ford 594-024 594-011 594-152 594-152 594-081 ... chevrolet car and light truck 400 v8 45.97 ... 1982-87 chevrolet s10 2.8 stamped 9033 38.97 1984-93 ... chevrolet s10 2.8 stamped 4955 42.97 1977-84 ... chevrolet truck 250 6 cyl 68.97 1983-92 chevrolet ... camaro 305 v8 check vin number before ordering 45 ... .97 1986-95 chevrolet caprice 307y 39.97 1973-82 ... chevrolet truck 350 v8 check oem before ordering 42. ... 97 1980-86 chevrolet truck 350 v8 check oem before ordering 46. ... 97 el camino malibu nova camaro 75-76 250 l6 75.97 chevy caprice camaro ...

ignitions electric late model ford accel supercoils these coils feature ... specialized silicone magnetic steel cores along with optimized winding resistance ... delivery 10-15 more energy than the oem coils specialized high temperature epoxy ... and vibration while increasing thermal conductivity.these are direct plug replacement for oem ... coils.they feature bodies and/or secondary towers ... yellow and feature brass secondary contacts except direct fire coil on plug ... applications 1998-04 ford 4.6l/5.4l/6.8l 2 valve eng 29.99 1997 ... -04 ford 4.6l/5.4l 4 valve eng 19.97 dodge ... magnum truck/jeep super coil accelsuper coil provides increased ...

ignition tune up parts make year model engine notes cap rotor cap rotor kit heavy ... perf duty tan black control module super stock coil racing coil ... super coil american motors electronic distributors ... 4 cylinder 1985-84 150 2.46l amc eng all models ... 35361 · 6 cylinder 1988 258 4.2l eng eagle ... 8140,8140c 8 cylinder 1979-78 all eng all models ... 8330 · · 8140,8140c buick distributorless ignitions 4 cylinder ... 1996-93 134 [4 2.2l eng century 1992-87 151 [r 2.5l ... eng century 1991-90 151 [u 2.5l ... eng skylark somerset regal 6 cylinder 2003-95 231 [k 1 3.8l eng riviera park ... avenue 2003-94 231 [k 1 3.8l eng regal ...

ignition tune up parts make year model engine notes cap rotor cap rotor kit heavy ... perf duty tan black control module super stock coil racing coil ... super coil buick cont electronic distributors 4 cylinder ... 151 2.5l eng century skylark somerset regal ... 1981 151 2.5l eng skylark can ... 130120 · · 35361 6 cylinder 1987 231 [a 3.8l eng regal can ... 130120 8129 · 35361 231 [a 3.8l eng regal exc can ... 35363 1986 173 [x 2.8l eng century can ... 8130 · · 173 [x 2.8l eng century exc can exc fuel injection ... 8130 · · 231 [a 3.8l eng regal w/2 bbl carb can ... 130120 8129 · 35361 231 [a 3.8l eng regal w/2 bbl carb exc can ...

exhaust access water pumps nitrous cams access heads efi manifolds install ... items gaskets fuel pumps carbs access crate engines superchargers kits power pkg ... camshafts edelbrock camshaft kits part of the total power package ... performer-plus camshafts designed for optimum torque from the low-end to the ... mid-range performer-plus camshafts match with performer manifolds for ... idle to 5500 rpm they are smooth idling cams for daily drivers trucks vans rvs and ... 4x4s you can expect a major improvement in throttle ... performer manifolds and performer-plus cams all camshafts come with hydraulic ... lifters except for cams designed for use with stock roller lifters assembly ...

exhaust access water pumps nitrous cams access heads efi manifolds install ... items gaskets fuel pumps carbs access crate engines superchargers kits power pkg ... timing chains · solid bushing chain resists stretching · billet sae-1144 ... steel crank sprockets · multiple keyways except on ... streetlegal sets timing chain set #7800 performer-link timing chain ... sets true-roller timing chain sets performer-link timing chain sets ... are for use with edelbrock or stock cams they have a solid-bushing chain for a ... rolls with the sprockets eliminating chain stretch cam sprockets are made from 35, ... 000 psi tensile strength cast iron crank sprockets are made from billet sae-1144 ...

exhaust access water pumps nitrous cams access heads efi manifolds install ... items gaskets fuel pumps carbs access crate engines superchargers kits power pkg ... camshafts edelbrock camshaft kits part of the total power package ... performer-plus camshafts designed for optimum torque from the low-end to the ... mid-range performer-plus camshafts match with performer manifolds for ... idle to 5500 rpm they are smooth idling cams for daily drivers trucks vans rvs and ... 4x4s you can expect a major improvement in throttle ... performer manifolds and performer-plus cams all camshafts come with hydraulic ... lifters except for cams designed for use with stock roller lifters assembly ...

exhaust access water pumps nitrous cams access heads efi manifolds install ... items gaskets fuel pumps carbs access crate engines superchargers kits power pkg ... timing chains · solid bushing chain resists stretching · billet sae-1144 ... steel crank sprockets · multiple keyways except on ... streetlegal sets timing chain set #7800 performer-link timing chain ... sets true-roller timing chain sets performer-link timing chain sets ... are for use with edelbrock or stock cams they have a solid-bushing chain for a ... rolls with the sprockets eliminating chain stretch cam sprockets are made from 35, ... 000 psi tensile strength cast iron crank sprockets are made from billet sae-1144 ...

warehouse 818 678-3000 pawengineparts.com hydraulic flat tappet camshafts 9.1 or ... less compression ratio torque cams a perfect cam for o.e replacement and ... driven vehicles these high torque cams work very well on the street made for ... use with engines having a 9:1 or less compression ratio they can be used in conjunction ... with most stock components including intake manifolds exhaust ... manifolds 252h ­ ideal for medium sized engines 300-350 c.i that require good low ... speed torque this cam is a good all-around cam for family ... sedans and a great performance cam for turbocharged v6 and v8 engines the 252h ... cam is a good replacement cam for o.e.m that works with most stock valve ...

warehouse 818 678-3000 pawengineparts.com high-performance o.e.m approved double ... in high performance and durability · cam sprockets utilize a larger tooth ... profile for superior strength and are machined to ... the highest performance applications · crankshaft sprockets also utilize the larger tooth ... profile for superior strength are machined from sae ... and the teeth are induction hardened for durability the three keyway crank ... allows easy advance or retard of camshaft/valve make/engine p .a.w premium roller ... 3-key way timing chain sets timing chain sets 29 as low a s 95 timing for ... optimal performance selection · the chains included are of the highest quality ... -performance timing increasing both the chain and sprocket life as always chains are ...

exhaust access water pumps nitrous cams access heads efi manifolds install ... items gaskets fuel pumps carbs access crate engines superchargers kits power pkg ... manifolds amc/buick 3500-7500 rpm torker amc designed for ... street and race 343-360-390-401 c.i.d v8 engines manifold not equipped with ... not accept stock motorcraft spread-bore carburetor not recommended for 290 or 304 v8s ... torker amc 1970-91 non-egr 2930 carburetor recommendations for high-performance or ... competition edelbrock thunder series avs or ... performer series carb 750-800 cfm see pages 31-36 installation notes ... metal valley tray gasket #2930 has two center bolt holes offset manifold height a-4. ...

BUICK 4 CYLINDER 1996-1993 2.2 engines 4051 4751 4551 1992-1987 Century, ... Skylark, Somerset with 2.5 engine 4050 4750 4550 1989-1987 Skyhawk (OHC ... engine), VIN "1" 1 4051 4751 4551 1988-1987 ... Skyhawk (OHV engine), VIN "K" "M" 1 4047 4747 4547 1987 ... Skyhawk Turbo 4047 4747 4547 1986-1980 Century,Skylark,Somerset 4048 refer 4548 1986-1983 Skyhawk with ... 2.0 engine 4047 4747 4547 1986-1982 Skyhawk, ... Skyhawk Turbo with 1.8 EFI engine 4049 -- 4549 1983-1982 Skyhawk with 1 ... .8 carburetor engine 4047 4747 4547 6 CYLINDER 2006-1996 3.8 engine, Allure, Regal, ... Century, La Crosse 60189 67189 65189 2006 3.9 engine, ... Terraza refer 2006-2005 3.5 engine, Rendezvous, Terraza 60273 67273 65273 ... 2005-1997 3.1 3.4 engines 6032 6732 6532 2005-1996 3.8 engine, Le ...

exhaust access water pumps nitrous cams access heads efi manifolds install ... items gaskets fuel pumps carbs access crate engines superchargers kits power pkg ... power packages ­ idle to 5500 rpm engine family induction intake manifolds efi ... systems c carburetor or throttle body size cylinder heads c ... camshaft lifters valvetrain timing chain valve valve gear springs e spring drive ... 2166 3766 2711 3711 2151 2156 600-650 cfm 500-650 cfm 500 cfm 500 cfm d 600-650 ... cfm d 600-650 cfm d 600-650 cfm a,d 600-650 cfm d 3809/3810 3809/3810 ... 600-800 cfm d 600-650 cfm d 600-800 cfm 750-800 cfm 500-650 cfm d 600-800 cfm ... 70mm b 70mm b 600-650 cfm d 600-650 cfm 600-800 cfm 650-800 cfm 750-800 cfm 600 ...

warehouse 818 678-3000 pawengineparts.com engine bearings engine bearings since ... precision insert-type bearing in 1929 clevite 77 engine bearings have set a standard ... for engineering quality clevite 77 engine bearings are built to meet or exceed ... oem parts when it comes to strength and durability with the ... broadest offering of tri-metaltm cast copper lead engine bearings available clevite ... standards set by heavy duty oems for strength and durability the majority of ... clevite 77 engine bearings utilize a superior tri-metal ... design first developed by clevite 50 years ago and perfected over time ... design incorporates the strength of a copper-lead alloy layer on a precision steel back ...

warehouse 818 678-3000 pawengineparts.com p.a.w cam bearings p.a.w complete ... engine cam bearing sets make year 6 cylinder 1964-1995 199-232-241-258 ... -1962 1977-1984 1963-1967 1968-1974 amc engines engine type part your price as low as ... .95 $73.95 $22.95 $22.95 $19.95 $31.95 buick engines cadillac engines 365-390 368- ... 425 390-429 472-500 v6 231 3.8 type l 1 m77-sh1448s 204 ... 3.3 231 3.8 type c k l m77-sh1448s 231 3.8 with 20 bolt oil pan m77-sh1448s ... 181-196-231 with 20 bolt oil pan ... m77-sh1448s 181-196-231-252 with 14 bolt oil pan m77- ... -1973 1961-1980 1971-1978 1979-1993 6 cylinder 1960-1972 144-170 ... 370-429-460 m77-sh1111s chrysler engines engine type ford engines 1962- ...

decals tags stickers group 0 valve cover identification d88 1966-1967 340-2 ... black and silver 4.00 d70 1967-1969 buick 400-4 black silver 4.00 d65 1967- ... 1969 buick 430-4 black and silver 4.00 d66 1968- ... 1974 buick 350-2 black and silver 4.00 d67 1968- ... 1974 buick 350-4 black and silver 4.00 d62 ... 4.00 1970 all with 455 stage 1 engine 4.00 1970 all v-8 evaporative control ... 350 4bbl automatic transmission high comp 3.50 1971 350-2bbl 4.00 1971 buick ... 350-4 automatic transmission 4.00 1971 buick gs 455 automatic transmission 3.50 1972 ... buick 350 4bbl automatic transmission 3.50 ... 1 automatic transmission 3.50 1976 231-2v 4.00 1977 305-2v 4.00 1977 350-4v-ay ...

-1964 pressure hose 1963 wildcat w/425 engine 1964 wildcat electra w/o a.c sh-635p ... 29.50 ea 1964-1965 lesabre with 300 engine pressure hose sh649p 39.50 ea 1961- ... 1968 all 401,425 430 engines return hose 1971-1972 all 455 engines ... sh-690r 29.50 ea 1973-1976 all 455 engines pressure hose sh-716p 36.50 ea 1977- ... repair kit sd-570 19.25 ea steering coupler 1967-1977 all with power steering sc- ... 62.00 ea steering wheel parts 1969-1974 cancelling cam for all tilt wheel applications cc- ... 694 20.25 ea 1966-1974 horn spring and contact kit for all standard wheels hs-666 4. ... kits 1961-1966 all 225 300 340 401 425 engines spk-596 28.50 ea 1967thru 1985 lesabre ... wildcat electra centurion 1973-1985 apollo century skylark ...

cooling coolant overflow tanks · made from polished ... stainless steel to resist rust and corrosion · features a 2 diameter with various ... lengths to fit anywhere in engine bay area stainless steel 2 x 13 ... to alleviate the power drag produced by conventional pulley drive units a heavy-duty ... rpm is more than adequate to fulfill cooling needs without draining precious ... horsepower from the engine gm v6 231 cu in chevy all v8 v6 200 229 cu in ... ford small big block mopar small block big ... block hemi pontiac 350 thru 455 cu in buick 350 cu in olds 350 thru 455 cu in 4333 ... 40 faster 4433 service parts for 4333/4433 mounting plate 4394 12 volt d ... .c electric motor 4396 large pulley-fits ...

cooling high performance thermostats · designed ... to resists large variations in coolant pressure at higher rpms · this high ... performance thermostat opens at the correct temp every time regardless of the rpms ... · perfect for street or strip gm/ford/amc 160° 4363 180° 4364 195° 4365 ... chry/dodge/ply 160° 4366 180° 4367 4366 ... 160°f 180°f 195°f make-model-year 160°f ford continued 8 cyl engines 1984-80 255 cid ... 4.2l 4363 1995-65 302 cid 5.0l 351w cid 5.8l after 3/1/65 4363 1971-67 390 427 ... 428 cid 4363 1978-67 429 cid 7.0l 460 cid 7.5l 4363 jeep 4 cyl ... engines 1995-55 all exc 151 cid 2.5l gm eng 4363 6 cyl engines 1995-48 ... all 4363 8 cyl engines 1989-67 all exc 1970-65 327 4363 ...

360 manifolds v-g section-page 6 mini car-pages b to 13 v-8 section-page 7 cutaway dual ... system works the dual port 360 can best be described by saying tt s ... is divided from the base of the carburetor t o the head flange the percentage of ... separation ir o f cwrse a closely guarded secrer on this now patented des ... ~gn and it varies from engine t o englne in operation the prirnav ... is fed into-the bottom runners and the engine opera ares on this smaller port until ... driver or engine demand cuts i n the secondaries the top part many ... t h e alr flow after passing the carburetor and increases it to the speed of sound ... thts means that wen at low engine rpm see dyno charts we re getting near ... thts extra horsepower on the prlmarles comes from a more perfect mixture rnovlng at ...

bulck jeep v-6 competition manifolds 3 6 0 ~c j a j new c9 ... a.f.b pattern and the quadrajet carb pattern all slngfe-quad and all hi rise ... design this manlfold can also be machined for marlne use up to ... when ordering be sure and specify ~f engine i s mounted towards t h e front or rear ... no extra charqe for thls service 19 7 t wlth the upsurge of ... and unl~rrr~tau plilelllid1 ~f the buick v6 englne offy advances tts leadership ... in the v6 fteld and introduces the c manifold designed specificalfy for the ... bulck v6 a competrr~anrnantfold the floor of the plenum area has been ... 6169 part 5714 t part 6170 1962-63 for the a.f.b or holley carb 1962-63 for ... the ouadrajet carb 1964 7 2 for the a f.b or holley carb 1975 i231 c.i ...

warehouse 818 678-3000 pawengineparts.com timing covers gm restoration parts ... timing chain covers for use on chevrolet small block v8 19691991 and v6/90° ... engines with chevrolet bow tie emblems engineered to gm standards for reliable ... installation this stamped steel cover is supplied with a gm production oil ... and it is a direct replacement for all late model small block and v6/90° ... front covers that use a bolt-on timing pointer black ... crinkle timing cover offers a distinctive look and boldly ... striking bow tie and chevrolet emblems inlaid with classic chevrolet ... total look when used with a black crinkle air cleaner and valve covers each ... timing cover fits both 14 20 bolt oil pans pio- ...

street force headers truck force headers competition headers 117 ... requires hooker frame mount #12651 for gm 4 speed 119 this header requires the ... -72 use rear transmission mount #12652 for turbo 350 · 1973-78 use rear ... transmission mount #12653 for turbo 350 120 will fit corvette d-port ... not fit with turbo 400 unless trans crossmember is set back 2 at the mount 122 three ... 350 saginaw 4-speed muncie 4-speed and chevette rack and pinion steering 129 will not ... fit 1982 buick century front wheel drive 130 header dual ... motor mounts from either 2 or 4 wd 1983 fords with a 460 135 this is a tri-y header ... length 17 136 modification of rear crossmember necessary for installation of left-hand ... collector 137 this header requires use of ...