Availability
CHEVROLET Chevy big block Mark IV Engine Blocks & Accessories
Main Studs, 2-Bolt Main, Chevy, Big Block, Kit
Part Number: MIL-81138
Not Yet Reviewed
Estimated Ship Date: Jun 15, 2026 if ordered today
Estimated Ship Date: Jun 15, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Engine Expansion Plug Kit 65-90 BUI/CHV/GMC/OLD/PON 6.0L/6.5L/6.6L/7.0L/7.4L/L
Part Number: EGN-PK3
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
Engine Expansion Plug Kit 91-00 BUI/CHV/GM/GMC/OLD/PON 4.3L/6.0L/7.0L/7.4L/L
Part Number: EGN-PK4B
Not Yet Reviewed
Estimated Ship Date: Apr 13, 2026 if ordered today
Estimated Ship Date: Apr 13, 2026 if ordered today
Main Caps, Merlin III, 3-Center, Angled Outer Bolts, 4-Bolt, Chevrolet, Big Block, Each
Part Number: WRL-703370C
Not Yet Reviewed
Estimated Ship Date: Apr 28, 2026 if ordered today
Estimated Ship Date: Apr 28, 2026 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.590 in. Bore, 9.850 in. Deck, 55mm Cam Bore, Nodular Iron Main Cap, 2-Piece Rear Seal, Chevy, Big Block, Each
Part Number: WRL-091107-55
Not Yet Reviewed
Estimated Ship Date: Apr 28, 2026 if ordered today
Estimated Ship Date: Apr 28, 2026 if ordered today
BR EXP PLUG KIT
Part Number: PIO-PE-101-B
Not Yet Reviewed
Estimated Ship Date: Apr 6, 2026 if ordered today
Estimated Ship Date: Apr 6, 2026 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.595 in. Diameter Bore, 9.850 in. Deck, Billet Steel Main Caps, 2-Piece Rear Main Seal, Chevy, Big Block, Each
Part Number: WRL-095017
Not Yet Reviewed
Estimated Ship Date: Apr 28, 2026 if ordered today
Estimated Ship Date: Apr 28, 2026 if ordered today
Engine Block, Cast Iron, Nodular Iron Splayed 4-Bolt Mains, 4.495 in. Bore, 2-Piece Seal, 9.800 in. Deck, Chevy, Big Block, Each
Part Number: WRL-091101-55
Not Yet Reviewed
Estimated Ship Date: Apr 28, 2026 if ordered today
Estimated Ship Date: Apr 28, 2026 if ordered today
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