Engine Blocks & Parts

Engine Block, Cast Iron, 4-Bolt Mains, 3.995 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084080

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Main Studs, 4-Bolt Main, Merlin IV, Billet Main Caps, Chevy, Big Block, Kit

Part Number: WRL-701416

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Estimated Ship Date: Dec 1, 2025 if ordered today

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BILLET MAIN CAPS

Part Number: WRL-703370-5

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Estimated Ship Date: Dec 1, 2025 if ordered today

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Main Caps, Ductile Iron, 3-Center, Straight Outer Bolts, 4-Bolt, Chevy, Small Block, Set

Part Number: MIL-11165

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, Chrysler, Dodge, 392 Hemi, Set

Part Number: MIL-11350

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 26, 2026 if ordered today

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Main Caps, Ductile Iron, 3-Center, Angled Outer Bolts, 4-Bolt, Pontiac, 421, 428, 455, Set

Part Number: MIL-11520

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Main Studs, Straight 4-Bolt Main, Chevy, Large Journal, Small Block, with Milodon Caps, Kit

Part Number: MIL-81130

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Main Studs, Straight 4-Bolt Main, Chevy, Large Journal, Small Block, with Milodon Caps, Windage Tray, Kit

Part Number: MIL-81131

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Main Studs, 4-Bolt Main, Chevy, Big Block, with Milodon Caps, Kit

Part Number: MIL-81133

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Jan 26, 2026 if ordered today

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BB ChevyMerlin with Windage Tray Main Studs

Part Number: MIL-81136

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Main Cap Fasteners, Milodon Straight Bolt Caps, 8740 Chrome Steel Studs, 4130 Heat Treated Steel Washers and Nuts, Chevrolet, Big Block, Kit

Part Number: MIL-81140

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Main Cap Fasteners, Two Bolt Caps with Windage Tray, 8740 Chrome Steel Studs, 4130 Heat Treated Steel Washers and Nuts, Holden, V8, Kit

Part Number: MIL-81146

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Estimated Ship Date: Jan 26, 2026 if ordered today

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Main Studs, 4-Bolt, Ford, 351C, with Milodon Caps, Windage Tray, Kit

Part Number: MIL-81170

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Estimated Ship Date: Jan 26, 2026 if ordered today

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SPRING OILER JET .015 DIA ORIFICE, 16 PACK

Part Number: MOR-68825

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Estimated Ship Date: Nov 25, 2025 if ordered today

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AN Block Adapters, -12 AN Adapters, Clear Anodized, Chevy, Small Block, Kit

Part Number: PGP-PRP-6850

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Four Bolt Main Cap Kit

Part Number: PIO-839022

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Estimated Ship Date: Nov 19, 2025 if ordered today

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EXP PLUG KIT

Part Number: PIO-PE-229-B

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Estimated Ship Date: Nov 19, 2025 if ordered today

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EXP PLUG KIT

Part Number: PIO-PE-250-R

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Estimated Ship Date: Nov 19, 2025 if ordered today

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EXP PLUG KIT

Part Number: PIO-PE-140-BR

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Estimated Ship Date: Nov 19, 2025 if ordered today

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EXP PLUG KIT

Part Number: PIO-PE-145-BR

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Estimated Ship Date: Nov 19, 2025 if ordered today

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EXP PLUG KIT

Part Number: PIO-PE-186-R

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Estimated Ship Date: Nov 19, 2025 if ordered today

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EXP PLUG KIT

Part Number: PIO-PE-278-B

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Estimated Ship Date: Nov 19, 2025 if ordered today

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BR EXP PLUG KIT

Part Number: PIO-PE-300-BR

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Estimated Ship Date: Nov 19, 2025 if ordered today

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EXP PLUG KIT

Part Number: PIO-PE-620-R

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Estimated Ship Date: Nov 19, 2025 if ordered today

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BLOCK PLUG KIT

Part Number: PIO-PE-624-BR

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Estimated Ship Date: Nov 19, 2025 if ordered today

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