2003 Engine Blocks & Accessories Engines & Components - Free Shipping on Orders Over $109 at Summit Racing

Dart Iron Eagle Mopar Gen III Cast Iron Bare Blocks 31622211

Engine Block, Cast Iron, 4-Bolt Mains, 3.927 in. Bore, 1-Piece Rear Seal, VVT, Dodge, RAM, Hemi, Gen III, Each

Part Number: DRT-31622211

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

ARP High Performance Series Main Bolts 146-5001

ARP High Performance Series Main Bolts 146-5001

Main Bolts, High Performance Series, 2-bolt Style, Hex Head, Washers, Jeep, 4.0L, Kit

Part Number: ARP-146-5001

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Summit Racing™ LS Finned Aluminum Valley Covers SUM-240065-POL

Lifter Valley Cover, Finned, Aluminum, Polished, Chevy, LS, Each

Part Number: SUM-240065-POL

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

QuickTime Bellhousing Dowel Pins RM-141

Bellhousing Dowel Pins, 0.014 in. Offset, 0.628 in. Diameter, Ford, 4.6L/5.4L Modular, 5.0 Coyote, Pair

Part Number: QTI-RM-141

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Dorman Expansion Plugs 555-081

Freeze Plugs, Steel, 2.219 in. Closed End Diameter, 2.226 in. Open End Diameter, Chevy, GMC, Set of 10

Part Number: RNB-555-081

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

PRW Main Cap Stud Kits for 1998-2008 RAM 2500, RAM 3500 - 1000313

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: Mar 9, 2026 if ordered today

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Estimated Ship Date: Mar 9, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Extreme Duty Main Studs SUM-910513

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Ford Performance Parts Plug and Dowel Kits M-6026-CI46

Plug and Dowel Kit, Dowels, Drain Plugs, Cup Plugs, Heater Tube, Reproduction Ford Blocks, 4.6L 5.0L, Kit

Part Number: FMS-M-6026-CI46

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Summit Racing™ Oil Cooler Block-Off Plates SUM-121029

Oil Cooler Bypass Block-Off Plate, Billet Aluminum, Clear Anodized, With Dual 1/8 in. NPT Ports, Chevy, LS, Each

Part Number: SUM-121029

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Melling Engine Expansion Plug Kits MPE-901BR

Engine Expansion, Plug Kit, Stock Replacement, Cylinder Head, 1.250 in. Diameter, Brass, Kit

Part Number: MEL-MPE-901BR

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Dorman Expansion Plugs 555-080

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

Part Number: RNB-555-080

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Dura-Bond Engine Hardware Finishing Kits FKC-7B

Engine Hardware Kits, Engine Hardware Finishing Kits, Cylinder Head Dowels, Cam Thrust Plate Bolts, Woodruff Keys, Chevrolet, Small Block LS, Kit

Part Number: DUR-FKC-7B

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

QuickTime Bellhousing Dowel Pins RM-142

Bellhousing Dowel Pins, 0.021 in. Offset, 0.628 in. Diameter, Ford, 4.6L/5.4L Modular, 5.0 Coyote, Pair

Part Number: QTI-RM-142

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Mahle Original Cylinder Head Dowel Pins GS33593

Dowel Pins, Cylinder Head, Stepped, Ford, Pair

Part Number: MAH-GS33593

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

ARP Main Stud Kits 247-5404

Main Studs, 2-Bolt Main, , Cummins, 3.9L, 4BT, ARP2000, Kit

Part Number: ARP-247-5404

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

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Estimated Ship Date: Jan 6, 2026 if ordered today

Summit Racing™ LS Finned Aluminum Valley Covers SUM-240065-SAT

Lifter Valley Cover, Finned, Aluminum, Natural, Chevy, LS, Each

Part Number: SUM-240065-SAT

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

RHS Main Cap Dowel Pins 549201-1

DOWEL PIN, FOR LS BLOCK MAIN CAPS

Part Number: RHS-549201-1

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Cummins by Mopar Replacement Bellhousing Dowel Pins 04429678

Dowel Pins, Clutch Housing Locating Dowels, Steel, Each

Part Number: CBM-04429678

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

ARP Main Stud Kits 204-5403

Main Studs, 2-Bolt Main, Volkswagen, 2.8L, V6, Kit

Part Number: ARP-204-5403

Not Yet Reviewed

Estimated Ship Date: Jan 27, 2026 if ordered today

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Estimated Ship Date: Jan 27, 2026 if ordered today

Dorman Oil Line Block-Off Plate Kits 99971

Oil Line Block-Off Plate, Aluminum, Natural, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Kit

Part Number: RNB-99971

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Philadelphia Racing Products Oil Cooler Block-Off Kits PRP-4526

Oil Cooler Block-Off Plate, Aluminum, Black Anodized, 1/8 in. NPT Port, Chevy, LS, Each

Part Number: PGP-PRP-4526

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

Dorman Expansion Plugs 555-025

Freeze Plugs, Steel, Set of 10

Part Number: RNB-555-025

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

ARP High Performance Series Main Bolts 260-5401

Main/Case Bolts, Pro Series, 2-Bolt Main, Hex Head, Subaru, 2.0, 2.2, 2.5L, Kit

Part Number: ARP-260-5401

Not Yet Reviewed

Estimated Ship Date: Jan 19, 2026 if ordered today

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Estimated Ship Date: Jan 19, 2026 if ordered today

Dart Iron Eagle Mopar Gen III Cast Iron Bare Blocks 31622311

Engine Block, Cast Iron, 4-Bolt Mains, 4.125 in. Bore, 1-Piece Rear Seal, VVT, Dodge, RAM, Hemi, Gen III, Each

Part Number: DRT-31622311

Not Yet Reviewed

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

Melling Engine Expansion Plug Kits MPE-185BR

Freeze Plug Kits Bagged - Brass

Part Number: MEL-MPE-185BR

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026

BTR Engine Expansion Plugs BTR27693

Engine Expansion Plugs, BTR Plug Core, 0.625 in. Diameter, 0.25 in. Thick

Part Number: BTC-BTR27693

Not Yet Reviewed

Estimated Ship Date: Monday 1/5/2026

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Estimated Ship Date: Monday 1/5/2026