421-054 Big Block Chevy Polished Aluminum Timing Cover - Without Pump Drive Hole
These beautifully polished cast aluminum timing covers are perfect for any performance engine. Each cover is CNC machined to provide an excellent seal and their rigid construction assures your camshaft stays where it should. On reverse rotation applications, the inside bosses will need to be milled down.
Fits: a Gen 4 BBC engine.
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421-053 Big Block Chevy Polished Aluminum Timing Cover - Gen 5 Without Pump Drive Hole
(Use Gasket #300-17872 & seal #300-16872)
These beautifully polished cast aluminum timing covers are perfect for any performance engine. Each cover is CNC machined to provide an excellent seal and their rigid construction assures your camshaft stays where it should. Some machining required to clear double roller timing chains.
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421-052 Big Block Chevy Polished Aluminum Timing Cover - Gen 6 Without Pump Drive Hole (Use Seal #300-16872)
- These beautifully polished cast aluminum timing covers are perfect for any performance engine.
- Each cover is CNC machined to provide an excellent seal and their rigid construction assures your camshaft stays where it should.
- Does not fit Double Roller Timing Chains.
- Back utilizes O ring seal
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421-051 Big Block Chevy Polished Aluminum Timing Cover - Gen 6 Without Pump Drive Hole (Use Seal #300-16872) - Double Roller Compatible
These beautifully polished cast aluminum timing covers are perfect for any performance engine. Each cover is CNC machined to provide an excellent seal and their rigid construction assures your camshaft stays where it should. This model will fit Double Roller Timing Chains. Works with 7" or less harmonic balancers
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500-0691 Machined Billet Aluminum Water Pump Cover Plate - 455 Oldsmobile
These cover plates are designed to cover the OEM water pump area and allow
cooling water to enter the engine through the provided 1/2" NPT inlet holes. Includes stainless steel bolts and gaskets
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421-154 Big Block Chevy Polished Aluminum Timing Cover With Pump Drive Hole - Block Chevy Gen 4 Big (Use gasket #300-130055 & seal #300-16872)
These beautifully polished cast aluminum timing covers are perfect for any performance engine. Each cover is CNC machined to provide an excellent seal and their rigid construction assures your camshaft stays where it should.
Seal Included. Gaskets, Pump Drive and Hardware Sold Separately
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421-153 Big Block Chevy Polished Aluminum Timing Cover With Pump Drive Hole - Big Block Chevy Gen 5 (Use Gasket #300-17872 & seal #300-16872)
These beautifully polished cast aluminum timing covers are perfect for any
performance engine. Each cover is CNC machined to provide an excellent
seal and their rigid construction assures your camshaft stays where it should.
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676-18-5897 Key Features:
Additional Details:
- Thread Size: 3/8" or 9.5mm -18 NPT
- Terminal Type: 10-32 stud
- Range: 240° DS
- Fits: MCM/MIE engines
Interchanges/ReplacesMalloryMedallionMercruiser Stern Drive- 22-811091
- 36525
- 806490
- 806490T
- 97257
- 97257A1
OMC Stern DriveStewart WarnerVeethree SeastarVolvo Penta
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