Engine Blocks & Parts

Main Cap Fasteners, Two Bolt Caps, 8740 Chrome Steel Studs, 4130 Heat Treated Steel Washers and Nuts, Mopar R3 Small Block LA, Kit

Part Number: MIL-81180

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Main Cap, Billet Steel, 3-Center, Straight Outer Bolts, 4-Bolt, Chevy, Small Block, Each

Part Number: HRS-H350C-1

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Special Order

Main Cap, SB Chev 350

Part Number: HRS-H350S-1

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Main Cap SB Chev 400

Part Number: HRS-H400-1

Not Yet Reviewed

Estimated Ship Date: Sep 15, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: MIL-81129

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: MIL-81130

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: MIL-81131

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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: Oct 20, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: MIL-81134

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

BB ChevyMerlin with Windage Tray Main Studs

Part Number: MIL-81136

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Brass Cup Expansion Plug 2 In., SC, Height 0.420

Part Number: RNB-565-069

Not Yet Reviewed

Estimated Ship Date: Aug 12, 2025 if ordered today

• Drop Ship
• Special Order

EXPANSION PLUG

Part Number: MGR-555-108

Not Yet Reviewed

Estimated Ship Date: Aug 13, 2025 if ordered today

• Drop Ship
• Special Order

Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084120

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Part Number: WRL-084130

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 25, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Block, Ford Man O'War, 302 c.i.d., Cast Iron, 302 Mains, 8.2 in. Deck Height, 1-piece Rear Main Style

Part Number: WRL-087020

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engine Block, Cast Iron, 4-Bolt Mains, 4.115 in. Diameter Bore, 2-Piece Rear Main Seal, Ford, Small Block, Each

Part Number: WRL-087082

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 25, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engines, Bare Block, Cast Iron, Merlin IV BBC, 9.800 in. Deck Height, 4.495 in. Bore, Splayed Billet Main Caps, Standard Cam and Lifter bores, Each

Part Number: WRL-095010

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engines, Bare Block, Cast Iron, Merlin IV BBC, 9.800 in. Deck, 4.595 in. Bore, Billet Caps, 55mm Babbitt Cam Bearings and 0.904 in. Lifter bores, Each

Part Number: WRL-095012-55

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Engines, Bare Block, Cast Iron, Merlin IV BBC, 10.200 in. Deck, 4.495 in. Bore, Splayed Billet Caps, 55mm Babbit Cam Bearings and 0.904 Lifter, Each

Part Number: WRL-095110-55

Not Yet Reviewed

Estimated Ship Date: Aug 25, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Camshaft Plug, w/ 2.8L Diesel Engine; Camshaft Plug; , 2007-2018 JK Wrangler; 2008-2012 KK Liberty; 2005-2007 KJ Liberty;

Part Number: CWA-5179593AA

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

• Drop Ship
• Special Order

Main Cap Studs, 4140 Studs, Parallel Ground Washers, 12-Point Nuts, 4-Bolt Mains, 6.0L, V8, Powerstroke, Diesel, Ford, Kit

Part Number: PQX-1000306

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

MAIN CAP STUD KIT, FORD Powerstroke, 6.4L, 2008-2010, Custom-4140 Alloy Steel, 200,000 PSI

Part Number: PQX-1000308

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Main Cap Studs, 4140 Studs, Parallel Ground Washers, 12-Point Nuts, 2-Bolt Mains, 5.9L, 12V, L6, Cummins, Diesel, Dodge, Kit

Part Number: PQX-1000311

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Main Cap Studs, 4140 Studs, Parallel Ground Washers, 12-Point Nuts, 2-Bolt Mains, 5.9L, 24V, L6, Cummins, Diesel, Dodge, Kit

Part Number: PQX-1000313

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Main Studs, SCM-4140 Alloy Steel, 12-Point, Chevy, 6.6L, Duramax Diesel, LB7, LLY, Kit

Part Number: PQX-1000321

Not Yet Reviewed

Estimated Ship Date: Sep 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order