Engine Blocks & Parts

Main Bolts, 6-Bolt Main, Inner Bolts, Chevy, 4.8, 5.3, 5.7, 6.0L, Each

Part Number: NAL-12560272

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Bolt, GM Genuine Parts Replacement Bolt, Hex Head Flange, M8 x 1.25, 0.900 in. Underhead Length, Grade 10.9, Steel, Gray, Each

Part Number: ADO-12556127

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Rear Main Seal Housing, Engine Crankshaft Seal Housing, Rear Main Seal, V6, One-Piece, Each

Part Number: ADO-12595923

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Cylinder Head Locating Dowel Pin, Steel, Chevy, Each

Part Number: ADO-12558081

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Rear Main Seal Housing, Chevy, Small Block, LT1, Each

Part Number: NAL-12554312

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Engine Expansion Plug, Steel, AMC, Buick, Cadillac, Chevy, Ford, GMC, Jeep, Mercury, Oldsmobile, Set of 10

Part Number: RNB-555-028

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Freeze Plugs, Brass, Oldsmobile, 260-455 V8, Kit

Part Number: PRO-66559

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

Engine Expansion Plugs, Brass, Buick, Cadillac, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: MEL-MPE-124BR

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Expansion Plugs, Steel, 2.109 in. Diameter, Set of 10

Part Number: RNB-555-080

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Engine Oil Filler Caps, GM Genuine Parts, Stock Top Style, Round, Plastic, Black, Chevrolet, GMC, Each

Part Number: ADO-FC279

Not Yet Reviewed

Estimated Ship Date: Tomorrow

MAIN GIRDLE, BILLET STEEL, OLDS 455, incl PRW studs & hardware

Part Number: PQX-9045511

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Freeze Plug Kit, Brass, Oldsmobile, V8, Kit

Part Number: PIO-830011

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Feb 19, 2026 if ordered today

• Drop Ship
• Special Order

Engine Expansion Plugs, Steel, 2.094 in. O.D., 0.280 in. Depth, Set of 10

Part Number: RNB-555-049

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Expansion Plugs, Steel, Diameter 1.513 in., Various, Each

Part Number: RNB-555-077

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Main Cap Fasteners, ACDelco GM Genuine Parts Multi-Purpose Bolts, 7/16-14 Threads, Cadillac, Chevy, GMC, Olds, Pontiac, Each

Part Number: ADO-12561388

Not Yet Reviewed

Estimated Ship Date: Tomorrow

Engine Expansion Plugs

Part Number: NAL-10241154

Not Yet Reviewed

Estimated Ship Date: Jun 1, 2026 if ordered today

• Drop Ship
• Special Order

STUD KIT, MAIN GIRDLE, OLDS 455, incl PRW studs & hardwareStuds, PRW Fasteners & Hardware.

Part Number: PQX-1000213

Not Yet Reviewed

Estimated Ship Date: Apr 6, 2026 if ordered today

• Drop Ship
• Special Order

SHORT MAIN CAP BOLT

Part Number: NAL-11548075

Not Yet Reviewed

Estimated Ship Date: May 13, 2026 if ordered today

Main Bearing Cap Bolt, Engine Crankshaft Main Bearing Cap Bolt, BOLT,CR/SHF BRG CAP TIE PLT

Part Number: ADO-24454170

Not Yet Reviewed

Estimated Ship Date: Mar 3, 2026 if ordered today

• Special Order

REAR MAIN SEAL HOUSING

Part Number: NAL-12705665

Not Yet Reviewed

Estimated Ship Date: May 29, 2026 if ordered today

• Special Order

Expansion Plugs, Steel, Diameter 2.105 in., GM, Set of 10

Part Number: RNB-555-085

Not Yet Reviewed

Estimated Ship Date: Feb 23, 2026 if ordered today

• Special Order

Freeze Plug Kits Bagged - Brass

Part Number: MEL-MPE-624BR

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Special Order

Freeze Plug Kits Bagged- Steel

Part Number: MEL-MPE-124R

Not Yet Reviewed

Estimated Ship Date: Feb 27, 2026 if ordered today

• Special Order

Engine Expansion Plug, Steel, AMC, Buick, Cadillac, Chevy, Ford, GMC, Jeep, Mercury, Oldsmobile, Each

Part Number: RNB-555-028-1

Not Yet Reviewed

Estimated Ship Date: Feb 20, 2026 if ordered today

• Special Order

Engine Expansion Plug, Brass, 1.625 in. O.D., Each

Part Number: NAL-94673017

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

• Special Order