Availability
Housing, Rear Main Seal, Aluminum, Chevy, LS, Each
Part Number: SUM-G2621
Estimated Ship Date: Today
Estimated Ship Date: Today
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Engine Block, Ford 302 Cast Iron , 4-Bolt Mains, 4.000 in. Bore, 1-Piece Rear Main Seal, Small Block, Each
Part Number: SUM-150206
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine, Bare Block, Big M Sportsman, Stock/OEM, 4.60 in. Bore, Cast Iron, 4-Bolt Main, 2-Piece Rear Main Seal, Chevy, Big Block, Each
Part Number: DRT-31223644
Not Yet Reviewed
Estimated Ship Date: Jan 5, 2026 if ordered today
Estimated Ship Date: Jan 5, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Lifter Valley Cover, Finned, Aluminum, Black Powdercoated, Chevy, LS, Each
Part Number: SUM-240065-BLK
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine, Bare Block, Big M Sportsman, Stock/OEM, 4.50 in. Bore, Cast Iron, 4-Bolt Main, 2-Piece Rear Main Seal, Chevy, Big Block, Each
Part Number: DRT-31223444
Not Yet Reviewed
Estimated Ship Date: Dec 4, 2025 if ordered today
Estimated Ship Date: Dec 4, 2025 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Main Studs, 4-bolt Style, 180,000 psi Yield Strength, Washers, Nuts, Chevy, Small Block, Kit
Part Number: SUM-910204
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Bolts, Extreme Duty, 4-bolt Style, 6-point, Premium Quality, 190,000 psi Yield Strength, Washers, Chevy, Small Block, Kit
Part Number: SUM-910203-PRO
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Main Studs, 2-Bolt Main, 180,000 psi Yield Strength, Washers, Hex Nuts, Chevy, Small Block, Kit
Part Number: SUM-910205
Estimated Ship Date: Today
Estimated Ship Date: Today
Engine Block, Cast Iron, Nodular Iron 4-Bolt Mains, 4.500 in. Bore, 1-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each
Part Number: WRL-091105
Estimated Ship Date: Dec 8, 2025 if ordered today
Estimated Ship Date: Dec 8, 2025 if ordered today
Lifter Valley Cover, Finned, Aluminum, Natural, Chevy, LS, Each
Part Number: SUM-240065-SAT
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Lifter Valley Cover, Finned, Aluminum, Polished, Chevy, LS, Each
Part Number: SUM-240065-POL
Estimated Ship Date: Today
Estimated Ship Date: Today
Engines, Bare Blocks, Man O'War Bare Block, 351 Cleveland Mains, 9.500 in. Deck Height, 4-bolt Main Style, Ford, 5.0L, 5.8L, Small Block Windsor, Each
Part Number: WRL-087072
Not Yet Reviewed
Estimated Ship Date: Dec 8, 2025 if ordered today
Estimated Ship Date: Dec 8, 2025 if ordered today
S&S Cycle 92-99 BT w/ 4in Bore Special Application Crankcase - Natural
Part Number: SSY-31-0047
Not Yet Reviewed
Estimated Ship Date: Nov 12, 2025 if ordered today
Estimated Ship Date: Nov 12, 2025 if ordered today
S&S Cycle 92-99 BT w/ Stock Bore Super Stock Alternator Syle Crankcase - Wrinkle Black
Part Number: SSY-31-0055
Not Yet Reviewed
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Engine Block, Cast Iron, 2-Bolt Mains, 3.750 in. Bore, 2-Piece Rear Seal, Chevy, Small Block, Each
Part Number: DRT-31161411
Not Yet Reviewed
Estimated Ship Date: Jan 5, 2026 if ordered today
Estimated Ship Date: Jan 5, 2026 if ordered today
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Summit Racing™ SPC Engine Blocks SUM-150206
