2003 Workhorse P-Series Engine
Select Your Submodel
- Engine Assemblies
- Engine Blocks
- Valves & Valvetrain Parts
- Pistons, Rings & Connecting Rods
- Oil Filters
- Serpentine Belts & Auxiliary Drive Belts
- Valve Covers
- Timing Gears, Chains & Covers
- Oil Pans, Drain Plugs & Dipsticks
- Cylinder Heads
- Engine Pulleys
- Engine Sensors, Relays, Switches
- Oil Pumps
- Oil Coolers
- Camshafts
- Crankshafts
- Engine Management Systems
- Engine Bearings
- Harmonic Balancers
- Engine Rebuild Kits
- Balance Shafts
- Throttle Bodies
- Carburetors
- Motor Oils
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TRQ®Driver Side Engine Valve CoverWorkhorse P-Series 6.0L 2003, Driver Side Engine Valve Cover by TRQ®. Give your vehicle a new life with this top-grade TRQ engine valve cover kit. Designed to prevent oil leaks and protect cylinder head hardware from the elements, it...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$75.95$79.95Save $4.00 (5%) - PAI®Repair SleeveWorkhorse P-Series 3.9L 2003, Repair Sleeve by PAI®. Sold Individually. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....2 Years WarrantyPerfect blend of leading innovations and superior workmanship$23.88
- Mahle®Cylinder Head GasketWorkhorse P-Series 2003, Cylinder Head Gasket by Mahle®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$102.60 - $121.76
- AEM Performance Electronics®Infinity 308™ Programmable ECUWorkhorse P-Series 2003, Infinity 308™ Programmable ECU by AEM Performance Electronics®. Designed for the price conscious racer, the Infinity Series 3 incorporates all of the features necessary to run a high-performance engine...Fuel Injection control via airflow model-based (VE) tuningFull ignition control$745.39
- Fluidampr®Harmonic BalancerWorkhorse P-Series 8.1L With Chevy Big Block 2003, Harmonic Balancer by Fluidampr®. A Fluidampr performance damper provides premium, broad range control of destructive crankshaft torsional vibration for optimum performance and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$612.00
- Dura-Bond®Oil Dipstick PlugWorkhorse P-Series 5.7L 2003, Oil Dipstick Plug by Dura-Bond®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed...Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability$11.68
- Omix-ADA®Drive Belt Tensioner BoltWorkhorse P-Series 6.0L 2003, Drive Belt Tensioner Bolt by Omix-ADA®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind....Made with precision and quality in mindDesigned to meet your specific needs$12.89
- Dorman®HELP™ Oil Filler Tube GrommetWorkhorse P-Series 6.5L 2003, HELP™ Oil Filler Tube Grommet by Dorman®. Dorman offers a line of Engine Oil Filler Tube Grommets for a variety of automotive applications. This product is made of high-quality components to meet and...Direct replacement Grommets available (where applicable) to ensure a proper fitManufactured from high-quality materials for long-lasting durability$4.56
- Dart®Rear Camshaft PlugWorkhorse P-Series 5.7L with Chevy Small Block 2003, Rear Camshaft Plug by Dart®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability$6.89
- Dura-Bond®Camshaft Tray BoltWorkhorse P-Series 5.7L 2003, Camshaft Tray Bolt by Dura-Bond®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....Made with precision and quality in mindDesigned to meet your specific needs$7.64
- Dura-Bond®Hollow Dowel PinWorkhorse P-Series 2003, Hollow Dowel Pin by Dura-Bond®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to...Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability$8.81 - $10.31
- Dura-Bond®Nylon Oil Pump SleeveWorkhorse P-Series 5.7L 2003, Nylon Oil Pump Sleeve by Dura-Bond®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....Rigorously Tested to Withstand Years of AbuseHigh-Grade Materials for Long-Lasting Durability$7.96
- Dura-Bond®Oil Galley Rear Main PlugWorkhorse P-Series 5.7L 2003, Oil Galley Rear Main Plug by Dura-Bond®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....Made with precision and quality in mindDesigned to meet your specific needs$8.24
- Dura-Bond®Screw Torx Balance Shaft Thrust Plate BoltWorkhorse P-Series 5.7L 2003, Screw Torx Balance Shaft Thrust Plate Bolt by Dura-Bond®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance...Made with precision and quality in mindDesigned to meet your specific needs$7.86
- Dura-Bond®Spring RetainerWorkhorse P-Series 5.7L 2003, Spring Retainer by Dura-Bond®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed...Made with precision and quality in mindDesigned to meet your specific needs$16.24
- Driven Racing Oil®GP-1 Nitro SAE 70 Synthetic Blend Motor Oil, 1 QuartGP-1 Nitro SAE 70 Synthetic Blend Motor Oil, 1 Quart by Driven Racing Oil®. A Synthetic Blend, formulated with premium Pennsylvania Grade base oil and Driven’s High Zinc/low-detergent additive package resulting in enhanced engine...$10.34
- JT&T®4-Wire Distributor Module and Idle Air Control Connector PigtailWorkhorse P32 2003, 4-Wire Distributor Module and Idle Air Control Connector Pigtail by JT&T®. Designed utilizing the latest technology, this product by JT&T features premium quality and will perform better than advertised. Perfect for...Metri-Pack 150.2 (Pull-To-Seat) Series(4) 18 AWG Leads and Weather-Pack Seal$12.10
- Lucas Oil®Plus™ Racing Oil ZDDP SAE 60 Plus Conventional Motor Oil, 5 GallonsPlus™ Racing Oil ZDDP SAE 60 Plus Conventional Motor Oil, 5 Gallons x 1 Pail by Lucas Oil®. The "Plus" is for the extra additives above and beyond the normal additive package found in ordinary racing oils. This true high performance...$161.15
- Lucas Oil®SAE 50 Conventional Racing Motor Oil, 5 QuartsSAE 50 Conventional Racing Motor Oil, 5 Quarts by Lucas Oil®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind. It will...$149.13
- Lucas Oil®SAE 70 Conventional Racing Motor Oil, 5 GallonsSAE 70 Conventional Racing Motor Oil, 5 Gallons x 1 Pail by Lucas Oil®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in...$169.98
- Maxima Racing Oils®PS0™ SAE 0WT Synthetic Motor Oil, 1 QuartPS0™ SAE 0WT Synthetic Motor Oil, 1 Quart by Maxima Racing Oils®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind....$19.13
- Maxima Racing Oils®Performance Break-In™ SAE 5W-16 Break-In 2X Zinc Motor Oil, 5 GallonsPerformance Break-In™ SAE 5W-16 Break-In 2X Zinc Motor Oil, 5 Gallons x 1 Pail by Maxima Racing Oils®. Mineral based engine oil specifically formulated for breaking in engines with flat tappet camshafts, roller elements and where...$176.27
- Maxima Racing Oils®Performance Straight Weights™ SAE 50W Conventional Motor Oil, 1 GallonPerformance Straight Weights™ SAE 50W Conventional Motor Oil, 1 Gallon by Maxima Racing Oils®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology...$36.80
- Maxima Racing Oils®Performance Straight Weights™ SAE 60WT Conventional Motor Oil, 1 GallonPerformance Straight Weights™ SAE 60WT Conventional Motor Oil, 1 Gallon by Maxima Racing Oils®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology...$36.80
- Maxima Racing Oils®Performance Straight Weights™ SAE 70W Conventional Motor Oil, 1 GallonPerformance Straight Weights™ SAE 70W Conventional Motor Oil, 1 Gallon by Maxima Racing Oils®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology...$41.28
- Maxima Racing Oils®SAE 0W-10 Synthetic RS 010 Motor Oil, 1 QuartSAE 0W-10 Synthetic RS 010 Motor Oil, 1 Quart by Maxima Racing Oils®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers in mind....$17.11
- Maxima Racing Oils®SAE 5W-16 Conventional Performance Break-In Motor Oil, 1 QuartSAE 5W-16 Conventional Performance Break-In Motor Oil, 1 Quart by Maxima Racing Oils®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with...$10.60
- Mobil 1®Racing™ SAE 0W-50 Synthetic Motor Oil, 1 Quart x 6 BottlesRacing™ SAE 0W-50 Synthetic Motor Oil, 1 Quart x 6 Bottles by Mobil 1®. Mobil 1 Racing oils are proprietary formulations of low viscosity synthetic base oils fortified with a precisely balanced component-blended additive system...$101.51
- Motul USA®Classic SAE 50 Conventional Motor Oil, 2 Liters (2.11 Quarts)Classic SAE 50 Conventional Motor Oil, 2 Liters (2.11 Quarts) by Motul USA®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology and with customers...$112.30
- Royal Purple®API-Licensed™ Straight Grade Heavy Duty SAE 50 Synthetic Motor OilAPI-Licensed™ Straight Grade Heavy Duty SAE 50 Synthetic Motor Oil, 1 Quart by Royal Purple®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology...$9.68 - $59.94
