2003 Parts and Accessories

Valve Cover Gaskets, Performance, Silicone, Chevy, Small Block LS, Pair

Part Number: FEL-VS50504R1

4.76 out of 5 stars ( 25 )

Estimated Ship Date: Today

Thermostat, High Flow, 160 Degree F, Copper/Brass, AMC, GM, Chrysler, Ford, Each

Part Number: BRA-330-160

4.75 out of 5 stars ( 81 )

Estimated Ship Date: Today

Rear Main Seal, 1-Piece, Rubber, GM, 4.8L, 5.3L, 5.7L, 6.0L, LS1, Each

Part Number: FEL-BS40640

4.64 out of 5 stars ( 39 )

Estimated Ship Date: Today

Lug Nuts, Conical Seat, Bulge, Steel, Black Chrome, 14mm x 1.50 RH, Set of 4

Part Number: MCG-64074

4.86 out of 5 stars ( 37 )

Estimated Ship Date: Today

Bellhousing Bolts, Hex, 3/8-16 in. Thread, 8740 Chromoly, Black Oxide, 1.375 in. UHL, Chevy, Kit

Part Number: ARP-129-0901

4.97 out of 5 stars ( 89 )

Estimated Ship Date: Today

Thermostat, High Performance, Mechanical, 53mm Outside Diameter, 180 degrees, High-flow, AMC, Buick, Cadillac, Chrysler, Ford, Hudson, Each

Part Number: EDL-8604

4.5 out of 5 stars ( 24 )

Estimated Ship Date: Today

Coolant Crossover, Billet Aluminum, -4AN Braided Stainless Hose, LS Throttle Body Bypass Hose Kit Coolant Steam Crossover, W/ Vent, LS1, LSX, Kit

Part Number: SUM-220960

3.33 out of 5 stars ( 6 )

Estimated Ship Date: Today

LS and LT Flexplate or Flywheel Holding Tool, Crankshaft holder, Steel, Black, Chevrolet, 4.8/5.3/6.0/5.7/6.2 LS and LT, Each

Part Number: SUM-900332-1

3.92 out of 5 stars ( 12 )

Estimated Ship Date: Today

Oil Galley Plug Kit, "LS Dogbone or Barbell", Gen III/IV LS, Billet Aluminum, Kit includes barbell, Oil pan bypass delete, and pickup tube brace.

Part Number: SUM-120116

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

Gear Lube, MTL Transmission Gear Oil, 75W80, Synthetic, 1 qt., Each

Part Number: RED-50204

4.95 out of 5 stars ( 65 )

Cannot be shipped Internationally

• Restricted

Heater Hose, Standard, 5/8 in., Synthetic EPDM, Black, 50 ft. Long, Each

Part Number: DAC-80271

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Today

Lug Nuts, Conical Seat, Bulge, Steel, Chrome, 14mm x 1.50 RH, Set of 4

Part Number: MCG-64073

4.65 out of 5 stars ( 31 )

Estimated Ship Date: Today

Fuel Filter, Pressure Regulator, Inline, 58 psi, 5 Micron, Fuel Injection, Chevy, LS, 5.7L, Corvette, Each

Part Number: SUM-230150

3.72 out of 5 stars ( 18 )

Estimated Ship Date: Today

Engine Oil, Delvac Extreme, Synthetic, 10W30, 1 Gallon, Each

Part Number: MOB-122454-1

5.0 out of 5 stars ( 12 )

Cannot be shipped Internationally

• Restricted
• Mfr. Rebate

Rebate Expires: 4/30/2026

This Mobil 1 product qualifies for a rebate! Go to https://promotions.mobil.com/offers/delvacrebate/ ...Read More

Get up to $80 back after rebates on qualifying Mobil 1 Delvac products! $10 back on 1-gallon, $12 back on 2.5-gallon, $40 back on a 5-gallon pail of Delvac 1 ESP/Extreme Oil. $5 back on 1-gallon, $7.50 back on 2.5-gallon $20 back on a 5-gallon pail of Delvac 1300 Oil. Limit $80 maximum rebate per household. Go to https://promotions.mobil.com/offers/delvacrebate/ to redeem. Valid on purchases made between 2/1/26 and 4/30/26. Online rebate requests must be received by 5/7/2026. Valid in 50 U.S. states and D.C. only. Purchased together on (1) receipt or separately and combined in (1) envelope. Show Less

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Head Bolt Set, OEM Replacement, Hex, Dodge, Jeep, 5.7, Kit

Part Number: FEL-ES72200

5.0 out of 5 stars ( 13 )

Estimated Ship Date: Today

Motor Mounts, Engine Swap, Plate, Bolt-In, Billet Aluminum, SBC Gen III/IV Conversion, LS1/LS3, Pair

Part Number: ICB-551628

4.79 out of 5 stars ( 76 )

Estimated Ship Date: Today

Antifreeze, Dex-Cool, Concentrate, 1 Gallon, Each

Part Number: ADO-10-101

4.9 out of 5 stars ( 10 )

Cannot be shipped Internationally

• Restricted

Cylinder Deactivation Components, DOD Delete Plugs, Chevrolet, Set

Part Number: BTC-CBI-OBO

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Lifters, GM Genuine Parts, Hydraulic Roller Style, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Each

Part Number: ADO-12698945

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Rear Main Seals, Original, One-piece, Viton®, Chevy, Small Block LS, Each

Part Number: MAH-JV1657

4.8 out of 5 stars ( 10 )

Estimated Ship Date: Today

Pro LS Alignment Tool, Rear Cover, Installs Rear Main Seal, Chevy,Gen III-IV LS, Each

Part Number: SUM-900335

4.5 out of 5 stars ( 14 )

Estimated Ship Date: Today

Lug Nuts, Conical Seat, Bulge, 14mm x 1.50 RH, Closed End, Locking, Chrome Plated Steel, Set of 4

Part Number: MCG-24210

4.71 out of 5 stars ( 21 )

Estimated Ship Date: Today

Harness Adaptors, Holley EFI, LS3 MAP Sensor Adapter, Plug-and-Play, Pre-Terminated, Adapts to LS1/LS2 Engine, Chevy, 5.7L, 6.0L, Each

Part Number: HLY-558-416

4.89 out of 5 stars ( 18 )

Estimated Ship Date: Today

Engine Oil Dipstick, LS Cast Retro Pan, Billet Aluminum Handle, Black, Steel Tube with Braided Dipstick, Chevy GM, LS/LSX, Gen III/IV., Each

Part Number: SUM-122240

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

Steering Stabilizer, Single Design, Nitro NX2 Shock, Painted Silver, Chevy, Dodge, Jeep, Kit

Part Number: BDX-BDS85429

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today