Page 466 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Aluminum Layered Exhaust Timing Cover Seals And Gaskets
Manifold/Header Gaskets Part No. Description
Timing Cover Seals
MRG17 Chevy Big Block, 1965-99 396-454, Metal Clad
MRG18 Chevy Small Block, 1955-96 262-400, Metal Clad
Chrysler Big And Small Block,
MRG781G
1957-91 318-360 “A”, 383-440 “B”/“RB”/Hemi
Timing Cover Gaskets
MRG90 Chevy Small Block, 1955-96 262-400, Cork/Rubber
Manufactured from “dead soft” aluminum layers, gaskets have MRG92 Chevy Small Block, 1955-96 262-400, Syntheseal
the ability to withstand intense heat and resist deterioriating. MRG93 Chevy Small Block, 1955-96 262-400, Composite
Gaskets are .125” thick, conform to surface irregularities and MRG94 Chevy Big Block, 1965-99 396-454, Syntheseal
compress down to .060” for a leak-proof seal. Sold per pair. MRG790 Chrysler Small Block, 1967-91 318-360
MRG792G Ford Small Block, 1962-95 221-351W, Exc. 302 Boss
Part No. Description MRG793G Ford, 1970-82 351C, 351M-400
MRG7398G American Motors 304-401, 1970-79
MRG7404G SB Chevy 350 LT1, D-Port, 1992-97 MRG795G Ford Big Block, 1968-88 429-460
MRG7412G BB Ford “FE” 352-390, 1958-77
MRG7413G BB Ford 429-460, 1968-88
MRG7416G Oldsmobile 330-455, 1964-80
MRG7418G Pontiac 326-455, 1963-79 Rear Main Seals
MRG7427G SB Chrysler “Magnum” 318-360, 1992-03
MRG7430G BB Chrysler “B”/”RB” 383-440, 1959-80 Part No. Description
MRG7433G BB Chrysler 426 Hemi, 1966-71 MRG1960 Chevy Small Block, 1975-86, Silicone Dual Lip
MRG1965 Ford Big Block, ’68-88 429-460; Olds Big Block, 1965-76 400-455
Valve Cover Gaskets MRG1968 Chrysler Big Block, 1959-78 383-440, 426 Hemi
MRG1969
Chevy Big Block, 1965-90
Mr. Gasket offers three
types of valve cover
gaskets: traditional, high
density cork/rubber, steel
core Ultra-Seal, and steel core molded rubber. Chevy Water Outlet Gaskets
Molded Part No. Description
Application Thk. Mr. Gasket Ultra-Seal Rubber MRG738G Chevy Small Block, 1955-88 262-400, Aluminum Carrier/Silicone Bead
American Motors, 1966-79 290-401 3/16" MRG875 — — MRG740 Chevy Small Block, 1955-88 262-400, Std. Material
SB Chevy, 1958-86 265-400 3/16" MRG175 MRG5860 MRG5853G
SB Chevy, 1958-86 265-400 5/16" MRG179 MRG5861 —
SB Chevy, 1958-86 265-400 5/16" — MRG5864 † —
SB Chevy, 1986-96 305-350 3/16" MRG168 MRG5867 — Collector And Header Muffl er Gaskets
BB Chevy, 1965-90 396-454 3/16" MRG177 MRG5862 —
BB Chevy, 1965-90 396-454 5/16" MRG182 MRG5863 —
SB Chrysler, 1964-91 273-360 3/16" MRG379 MRG5876 —
BB Chrysler, 1963-78 383-440 3/16" MRG378 MRG5877 —
BB Chrysler, Indy Cylinder Head 1/16" MRG382 — —
BB Chrysler, 1964-71 426 Hemi 3/16" MRG374 — —
SB Ford, 1965-95 289-351W 3/16" MRG276 MRG5870 —
Ford, 1969-82 351C, 351-400 3/16" MRG274 MRG5871 —
BB Ford, 1958-76 332-428 “FE” 3/16" MRG275 — — MRG76 MRG5980
BB Ford, 1968-88 429-460 3/16" MRG278 — — MRG7176C
Oldsmobile, 1964-76 330-455 3/16" MRG476 MRG5875 — Prevent exhaust leaks between the header and collector or muf-
Pontiac, 1964-76 326-455 3/16" MRG576 MRG5869 — fl er. Gaskets fi t Hedman, Hooker, Flowtech and Dynomax headers.
† Clears relocated rocker studs and Jesel shaft assemblies. Available in standard Mr. Gasket, Ultra-Seal and blow-out proof
Copper Seal. Standard, bulk gaskets are sold individually. Ultra-
MRG4400 Seal and Copper Seal gaskets are sold in pairs.
Bolt Bolt Standard Packaged Packaged
Applications Dia. Circle Hole Bulk Ultra-Seal Copper Seal
Hedman/Hooker/Others 2-1/2" 3-1/2" 3/8" MRG76 MRG5980 MRG7176C
Hedman/Hooker/Others 3" 3-7/8" 3/8" MRG1204 MRG5971 MRG7177C
Cam Change Hedman/Hooker/Others 3-1/2" 4-7/16" 3/8" MRG1203 MRG5972 MRG7178C
Gasket Kits Note: Copper Seal gaskets may also be ordered individually by removing
Kits include all of the the “C” from the end of the part number.
gaskets required to com-
plete a camshaft change.
Part No. Description
MRG4400 SB Chevy, 1959-74 262-400
MRG4403 SB Chevy, 1975-79 262-400
MRG4405 BB Chevy, 1965-90 396-454, Oval Port

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