Page 5 of Northern Tool & Specialty Catalog by Northern Auto Parts
Valve Cover Hold-Down Clamps
By spreading the load over a wider area, these clamps minimize distortion of the valve cover flanges, thereby decreasing
the possibility of oil leakage. Fits Chevrolet small-block V8 and
V6/90 engines through 1986. 4 per package.
141-610 Hold-Down Clamps, Chrome . . . . . . . .$10.00
141-757 Hold-Down Clamps, Black Crinkle . . . . .$12.36
141-366 Hold-Down Clamps, High-Tech Gray . . . . .$9.37
141-903 Hold-Down Clamps, Chrome, Red Bowtie $11.12
Air Breather Caps
The top of each air breather cap is embossed handsomely with
a raised Bowtie Emblem to complement the genuine factoryparts appearance of the engine. Black crinkle breather cap is
the perfect complement to die-cast or stamped black crinkle
valve covers. For use in valve covers with grommets fitting
1.22" holes. Technical Note: Use with grommet in Grommet
Set PROFORM P/N 141-615.
141-616
Push-in, 3" dia. . . . . . . . . . . . . . . .$9.16
141-754
Push-in, 3" dia., Black Crinkle . . . .$12.36
141-365
Push-in, 3" dia., High-Tech Gray . .$10.35
For use in valve covers with grommets fitting 1.22" holes.
Technical Note: Use with grommet in Grommet Set PROFORM
P/N 141-615.
141-619
Push-in, rectangular . . . . . . . . . . .$10.27
For use with oil filler tube (PROFORM P/N 66020) or 1.82
opening.
141-617
Push-on, 3" dia. . . . . . . . . . . . . . .$9.16
For use with Chevrolet style holes. Technical Note:
Manufactured with non-asbestos gaskets. It may be necessary
to remove one gasket for proper clearance.
141-618
Twist-on, 3" dia. . . . . . . . . . . . . . .$9.16
These popular push-in filter air breathers, with the raised
Bowtie Emblem stamped prominently in the top, are offered in
two styles: with the heat-shield hood and without. 3" diameter.
Fits valve covers with 1.22" holes.
141-621
Push-in, filter, with hood . . . . . . . .$21.03
141-622
Push-in, filter, without hood . . . . . .$17.15
Push-In Oil Filler Cap
Chevrolet Bowtie embossed and raised on top. For valve
covers with 1.22" diameter hole.
141-630
Oil Filler Cap . . . . . . . . . . . . . . . . .$7.04
Twist-On Oil Filler Cap
This large oil filler cap has a large white-on-blue epoxy-coated
GM Emblem in the center. For Chevrolet style holes.
Manufactured with a non-asbestos gasket.
141-631
Oil Filler Cap . . . . . . . . . . . . . . . .$12.43
Linear Wire Looms
Using the valve cover mounting bolts, these handsome
Chevrolet chrome looms are positioned along the valve cover
to hold the wires in a neat parallel arrangement. The epoxycoated Bowtie Emblem is centrally located for maximum visibility. The wire holders are opened and closed individually with
a patented nylon wedge to permit the chrome tops to have a
smooth surface free of screw holes. Manufactured under U.S.
design patents 298,798; 284,262; 311,487. 1 pair per package.
Technical Note: Before purchasing, check exhaust manifold for
correct usage. For clearance reasons, the manifold must not
be much higher than the valve cover mounting flanges.
141-638
S/B V8, 1959-86 . . . . . . . . . . . . .$64.77
141-639
B/B, 1965-91 . . . . . . . . . . . . . . . .$84.22
Grommet Set
One for push-in air breather and one for PCV valve.
141-615
Grommet Set . . . . . . . . . . . . . . . . .$4.06
Ignition Wire Looms
Using the divisional red color, the CHEVROLET name and
Bowtie Emblem are molded onto the black nylon head of each
wire loom, mounted on chrome stems. Fits Chevrolet smallblock V8, 1959-86 and Chevrolet big-block V8 1965-91. 4wire looms, 2 per package.
141-636
Wire Looms . . . . . . . . . . . . . . . . .$10.52
Harmonic Balancer Covers
These patented harmonic balancer covers offer improved
readability, more stable Top Dead Center indication and timing
accuracy, enhanced appearance for a previously ignored
underhood area, and the elimination of timing tapes which are
inevitably flung off. They are available in chrome and black, resulting in parts with the appearance of $200 balancers. Each
cover is distinctively marked with the famous Bowtie Emblem,
Top Dead Center and the proper timing degrees. Using this
cover improves timing accuracy because over time the etched
outer inertia ring of a typical harmonic balancer may slip in
relation to the center hub of the balancer, causing the etched
markings to provide an inaccurate indication of Top Dead
Center for the #1 piston. Mounted directly through the center
hub, this cover eliminates the affect of any outer inertia ring
slippage. Aluminum. U.S. Patent 5,675,078.
6-3/4" Chevy small block
141-727
Black . . . . . . . . . . . . . . . . . . . . .$27.01
141-725
Chrome . . . . . . . . . . . . . . . . . . . .$27.01
8" Chevy small block
141-728
Black . . . . . . . . . . . . . . . . . . . . .$27.01
141-726
Chrome . . . . . . . . . . . . . . . . . . . .$27.01
Chevy big block
141-730
Black . . . . . . . . . . . . . . . . . . . . .$27.01
141-729
Chrome . . . . . . . . . . . . . . . . . . . .$27.01
Alternator Brackets
Made of heavy steel and offered for the most popular Chevrolet
small block V8 applications, these brackets become a very
noticeable addition to every chrome-accessorized engine.
Technical Note: Before purchasing, visually compare your original bracket style with catalog photo to insure proper part
selection. Use a steel straightedge to verify alignment with
crankshaft and water pump pulleys.
For use when top bracket bolts to intake manifold. Includes upper
and lower brackets. Technical Note: Engineered to fit applications
with a distance of 4" between the center of the hole in the intake
and the front of the mounting node on the water pump. For different distances due to water pump variations, minor modifications or shimming of the bracket may be necessary.
141-402
Alternator Bracket . . . . . . . . . . . .$34.51
For use when top bracket bolts to neck (except Corvette).
Includes upper and lower brackets. Technical Note: Engineered
to fit applications with a distance of 6-3/4" between the center
of the hole in the waterneck and the front of the mounting node
on the water pump. The brackets mounting holes are oval for
added adjustment. For different distances due to water pump
variations, minor modification or shimming of the bracket may
be necessary.
141-403
Alternator Bracket . . . . . . . . . . . . .$34.51
GM Restoration Parts
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