38300 - Moroso Fasteners


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Part #: 38300
Notes: Chrome Moly Head Bolt Washers
7/16"
Pack of 34
Your Price: $28.61

This Item Also Available In

Part Number Price Notes & Specs
37800 $17.05 Notes Deck Plug Kit
Pack of 6

All Fitments

BUICK
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1980 - 1984 CENTURY ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 LESABRE BASE
CUSTOM
LIMITED
SPORT
V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 REGAL ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 RIVIERA ALL V6 3.8 T ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1980 SKYHAWK ALL ALL ALL ALL ALL ALL w/ 90¡ V6 Chevy Motor
CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1975 - 1976 262 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1955 - 1957 265 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1980 - 1995 267 SMALL BLOCK BASE V8 4.4 N ALL GAS
1957 - 1967 283 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1967 - 1969 302 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1977 - 2002 305 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1967 - 1969 307 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1962 - 1969 327 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1967 - 1980 350 SMALL BLOCK GENERATION I ALL ALL ALL ALL ALL
1973 - 2005 350 SMALL BLOCK LATE MODEL ALL ALL ALL ALL ALL
1967 - 2005 360 SMALL BLOCK ALL ALL ALL ALL ALL FI
1970 - 1980 400 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1985 - 2005 ASTRO ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1995 - 2005 BLAZER BASE
TRAILBLAZER
ALL ALL ALL ALL ALL w/ 90¡ V6 Chevy Motor
1985 - 1986 C10 ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1988 - 1998 C1500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1985 - 1986 C20 ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1988 - 1995 C2500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 CAMARO ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1990 CAPRICE ALL V6 3.8
4.3
ALL ALL ALL w/ 90¡ V6 Chevy Motor
1978 - 1987 EL CAMINO ALL V6 3.3
3.8
4.3
ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1985 IMPALA ALL V6 3.8
4.3
ALL ALL ALL w/ 90¡ V6 Chevy Motor
1985 - 1986 K10 ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1988 - 1998 K1500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1985 - 1985 K20 ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1988 - 1995 K2500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1978 - 1983 MALIBU ALL V6 3.3
3.8
ALL ALL ALL w/ 90¡ V6 Chevy Motor
1978 - 1988 MONTE CARLO BASE V6 3.3
3.8
4.3
N ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1980 MONZA ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1988 - 2004 S10 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1988 - 1994 S10 BLAZER ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
GMC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1985 - 1998 C1500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1985 - 1995 C2500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1978 - 1987 CABALLERO ALL V6 3.3
3.8
4.3
ALL ALL ALL w/ 90¡ V6 Chevy Motor
1995 - 2005 JIMMY ALL ALL ALL ALL ALL ALL w/ 90¡ V6 Chevy Motor
1985 - 1998 K1500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1985 - 1995 K2500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1990 - 1999 P3500 ALL V6 4.3 N ALL ALL w/ 90¡ V6 Chevy Motor
1987 - 1987 R1500 ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1987 - 1987 R2500 ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1988 - 1990 S15 ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1988 - 1994 S15 JIMMY ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1999 - 2005 SIERRA 1500 BASE V6 4.3 N ALL FLEX w/ 90¡ V6 Chevy Motor
1991 - 2004 SONOMA ALL V6 4.3 ALL ALL ALL w/ 90¡ V6 Chevy Motor
OLDSMOBILE
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1991 - 2001 BRAVADA ALL ALL ALL ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1980 CUTLASS ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 CUTLASS CALAIS ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1984 - 1984 CUTLASS CIERA ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 CUTLASS CRUISER ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 CUTLASS SALON ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 CUTLASS SUPREME ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1983 DELTA 88 BASE V6 3.8 N ALL GAS w/ 90¡ V6 Chevy Motor
1980 - 1980 STARFIRE ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
PONTIAC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1980 - 1984 BONNEVILLE BASE
BROUGHAM
LE
V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1981 CATALINA BASE V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1984 FIREBIRD BASE
ESPRIT
FORMULA
V6 3.8 N ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1987 GRAND PRIX BASE
BROUGHAM
LE
LJ
V6 3.8
4.3
ALL ALL ALL w/ 90¡ V6 Chevy Motor
1978 - 1981 LEMANS ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1986 PARISIENNE BASE
BROUGHAM
V6 3.8
4.3
ALL ALL ALL w/ 90¡ V6 Chevy Motor
1980 - 1980 SUNBIRD ALL V6 3.8 ALL ALL ALL w/ 90¡ V6 Chevy Motor

Product Description

DECK PLUG KIT

  • Upper cylinder wall distortion is greatly reduced when these 3/4” NPT plugs are installed in the water passage holes in the decks of Small Block and 90° V6 Chevy engines
  • Water holes must be tapped before the plugs are screwed in; block must also be decked after installation
  • Plugs also restrict water flow to the cylinder heads by reducing size of water passage holes to 5/16”
  • Packaged six to a kit

ALUMINUM PIPE PLUGS

  • Use on most aftermarket aluminum blocks and heads to replace plugs removed or damaged during machining, cleaning, etc.
  • Available in two sizes, each with 3/8” hex socket drive for ease of installation and removal
  • Two per package

CHROME PLATED PIPE PLUGS

  • Chrome plated steel pipe plugs dress up often forgotten areas
  • Available for several NPT sizes
  • Use to plug vacuum accessory holes in manifolds, fill plug holes in transmissions and rear ends, or any other spot that accepts a pipe plug

OFFSET CYLINDER HEAD DOWELS

  • Offset cylinder head dowels reposition the cylinder heads upwards on the block (toward the lifter valley), moving valves away from cylinder wall for improved intake flow
  • One package contains 4 alloy steel dowels

EXTRA LONG BELLHOUSING DOWEL PINS

  • Provides an easy method of properly aligning the transmission input shaft to the crankshaft pilot bearing
  • Extra long to simplify the task of installing a bellhousing on the engine block
  • Offset Dowel Pins include set screws and instructions for locking pins into place; drilling and tapping of block required
  • Getting alignment concentric to within ±.005” insures a clean clutch release,maximum pilot bearing and transmission life and reduced shifting problems
  • .625” diameter
  • Two per package
  • Fits virtually all GMV8 and V6 blocks

BELLHOUSING PIN/SLEEVE KITS

  • Allows easy engine removal and realignment during installation

CHROME MOLY HEAD BOLT WASHERS

  • Not your ordinary hardware store variety!
  • Moroso Head BoltWashers are designed for the racer; machined from tough 4130 chrome moly steel, heat treated to proper hardness and parallel-ground
  • Stress loads are more evenly distributed and torque readings more accurate
  • Can also be used on main bearing caps, rocker arm stands, and other engine components
  • Use them over and over again

REAR SEAL ADAPTERS

  • Converts one-piece rear main seal on 1986 and newer Small Block Chevy blocks to the old style, two-piece rear seal when installing the old style crankshaft in the newer style blocks
  • Available for use with both new style oil pan (1986 and newer blocks with one-piece rear seal), and old style oil pan (pre-1980 blocks with driver-side dipstick)
  • Manufactured from billet aluminum
  • Includes fasteners

OIL PUMP STUD KIT

  • Studs are stronger and better at maintaining torque than factory bolts
  • Provides secure mounting for Moroso oil pumps or stock pumps
  • Kit includes flat washer and hex nut and serrated nut for windage tray

BULLET NOSE CARBURETOR STUD KITS

  • “Bullet Nose” studs are rounded on one end,making it easy to start nuts
  • Kits include 4 studs, hardened flat washers and jam nuts

OIL PAN STUD KITS

  • These stud kits make pan installation easy and prolong gasket life
  • Lock nuts feature attached washers with serrated faces to provide a positive grip on the pan rail
  • Studs are made of heat treated Grade 8 steel with black oxide finish; nuts are cadmium and zinc-plated
  • Highly recommended for use with our fabricated pans

BULLET NOSE OIL PAN STUD KITS

  • Bullet Nose Studs are rounded on one end for easier starting of oil pan mounting nuts
  • Kits include heat treated Grade 8 steel studs with a black oxide finish, and special-design nuts

SELF-LOCKING OIL PAN BOLTS

  • Self-Locking Oil Pan Bolts manufactured from Grade 8 steel
  • Integral serrated washer face provides self-locking effect
  • Cadmium-plated

LIGHTWEIGHT ALUMINUM HOOD PIN SET

  • Set consists of two 3/8” diameter pins with all necessary mounting hardware
  • Pins are manufactured from high strength aluminum alloy
  • We recommend 6 to 8 per hood

QUICK RELEASE HOOD PIN SET

  • A quick, self-contained hood clamping device
  • No pins or lanyards to lose or cause hood damage
  • We recommend 6 to 8 to a hood
  • 3/8” diameter aluminum pins; easy bolt-on installation may be used for many other applications where quick access to a trouble spot is absolutely essential
  • Two per set

OVAL TRACK HOOD PIN SETS

  • Compact and lightweight Hood Pin Sets consist of 3/8” dia. chrome plated steel pins with clips, 1-1/2” dia. stainless steel scuff plates and vinyl-coated stainless steel lanyards
  • Available in 3” and 4” pin lengths
  • Ideal for any full-bodied race cars
  • Two per set

CHROME HOOD PIN SET

  • Hood Pin Sets consist of two chrome plated steel hood pins (5” long with 3” of thread), two 1/8” hitch pins, four cadmium-plated mounting nuts, two scuff plates, two 12” vinyl-coated stainless steel lanyards and two rivet eyelets

QUICK FASTENERS, STEEL

  • Cadmium-plated steel fasteners provide quick fastening of body panels, door, tilt front ends, fiberglass to metal,metal to metal, etc.
  • Available in four lengths and three head styles
  • Use with Spring Nos. 71400, 71410, 71420, 71425 or 71430
  • Ten per package

QUICK FASTENERS, ALUMINUM

  • Thicker body to handle heavy duty jobs and aluminum for light weight
  • Slot head style
  • Use with Spring Nos. 71400, 71410, 71420, 71425 or 71430
  • Ten per package

SELF-EJECTING FASTENERS, 5/16”

  • These spring loaded buttons guarantee a quick release
  • The spring holds the button captive so that it can’t be dropped underneath the car or into some hard-to-get-at area of the chassis
  • A necessity for quick pit work in both drag racing and oval track
  • Use Spring No. 71430 as a replacement
  • Ten per package

BUTTERFLY SELF-EJECTING FASTENERS, 5/16”

  • These fasteners eliminate the need for tools
  • Same as Self-Ejecting Fasteners above, except with thumbscrew on top
  • Use Spring No. 71430 as a replacement
  • Ten per package

LARGE HEAD SELF-EJECTING FASTENERS

  • 7/16” for heavy duty use allows panels to be easily removed with fastener tool, allen wrench or a ratchet without stripping
  • These number 6 fasteners are in demand by racing’s finest chassis builders
  • Used on steel, aluminum and fiberglass body and interior panels where a more evenly distributed load to avoid pull-through is needed
  • Use with Spring Nos. 71400, 71410, 71420, 71425 or 71430
  • Ten per package

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