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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Amalie Oil®Pro High Performance™ SAE 50W Synthetic Blend Motor OilPro High Performance™ SAE 50W Synthetic Blend Motor Oil, 1 Quart by Amalie Oil®. A premium, synthetic blend, high performance motor oil. It is formulated for high mileage, light truck and passenger car gasoline/diesel engines.$7.44 - $79.74 - Dorman HD Solutions®Throttle Position SensorWorkhorse P42 With WM526 Series Pedals 2003, Throttle Position Sensor by Dorman HD Solutions®. Is your car noisier these days? Can you smell exhaust fumes in the cabin? Exhaust system repairs should not be put off, both for safety and...Designed as a replacement for your worn-out fuel system partWill help optimize your vehicle’s performance and fuel efficiency$316.99
- Eneos®Racing Street™ SAE 0W-50 Full Synthetic Motor Oil, 1 QuartRacing Street™ SAE 0W-50 Full Synthetic Motor Oil, 1 Quart by Eneos®. The Racing Street SAE 0W-50 motor oil is a PAO fully synthetic oil offering exceptional viscosity, fast starts, excellent engine protection, and anti-shearing...$11.99
- Liqui Moly®Special Tec B FE SAE 5W-30 Synthetic Motor OilSpecial Tec B FE SAE 5W-30 Synthetic Motor Oil, by Liqui Moly®. Primarily developed for the requirement of specific BMW gasoline engines without particulate filter (GPF) from year 2002 and later. Compatible for the use with...$13.12 - $54.00
- Lucas Oil®Racing SAE 50 Plus Conventional Motor Oil, 5 QuartsRacing SAE 50 Plus Conventional 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...$40.04
- Royal Purple®XPR™ SAE 0W-8 Synthetic Motor OilXPR™ SAE 0W-8 Synthetic Motor Oil, 1 Quart by Royal Purple®. XPR 0W-8 is an ultra-light viscosity racing motor oil formulated for use in drag racing, motorcycle sprint racing, etc. This product is made of high-quality components to...$17.54 - $105.24
- PAI®Inlet Connection GasketsWorkhorse P-Series 3.9L 2003, Inlet Connection Gaskets by PAI®. 6 Pieces. 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...2 Years WarrantyPerfect blend of leading innovations and superior workmanship$3.25
- Continental® ContiTech™Serpentine BeltWorkhorse P-Series 8.1L 2003, Serpentine Belt by Continental® ContiTech™. 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...Made with precision and quality in mindDesigned to meet your specific needs$26.40
- Idemitsu®Synthetic Blend Racing Rotary Premix Motor Oil, 1 QuartSynthetic Blend Racing Rotary Premix Motor Oil, 1 Quart by Idemitsu®. Developed for high-capacity engines, including turbos. Optimized for maximum performance, durability and wear protection, reducing emissions and fuel consumption.Developed for high-capacity engines, including turbosFeatures superior long-life technology$11.99
- Genuine®Motor OilMotor Oil, by Genuine®. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in need of repair, but before you waste your time and gas running out...$9.52 - $18.85
- Motorcraft®SAE 5W-20 Full Synthetic High Mileage Motor Oil, 1 QuartSAE 5W-20 Full Synthetic High Mileage Motor Oil, 1 Quart by Motorcraft®. 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...$4.96
- gpd®Throttle Position SensorWorkhorse P-Series 3.9L with WM526 Series Pedals 2003, Throttle Position Sensor by gpd®. The Throttle Position Sensor monitors how far open the throttle valve is, which is why it is most commonly found on the throttle body. It then...Designed to meet/exceed OE fit, form and function100% Tested for durability and performance$137.85
- CVR Performance®Spin-On Oil Filter MountWorkhorse P-Series 2003, Spin-On Oil Filter Mount by CVR Performance®. 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....Eliminates the filter bypass port for 100% complete filtrationIncludes O-ring seal & hardware$38.92
- Earl's Performance®Remote Oil Filter AdapterWorkhorse P-Series 5.7L 2003, Remote Oil Filter Adapter by Earl's Performance®. Earl's oil filter adapter allow you to relocate the oil filter to another location for better access or extra clearance. This adapter eliminates the OEM...Billet Aluminum Remote Oil Filter AdapterEliminates OEM By-Pass & Bolts to the Mounting Holes Inside Oil Filter Pocket$99.95
- Hastings®Engine Oil FilterWorkhorse P-Series 8.1L 2003, Engine Oil Filter by Hastings®. Hastings Premium Filters has been a manufacturer of mobile filtration products for over sixty years. Hastings manufactures and distributes automotive and heavy-duty filters...Expertly crafted from premium materialsDesigned to match rigorous quality standards$4.66
- COMP Cams®Double Roller Adjustable Timing SetWorkhorse P-Series 5.7L 2003, Double Roller Adjustable Timing Set by COMP Cams®. Induction hardened and precision machined steel billet gears for bulletproof durability in GM LSX applications. Featuring 9 keyway crank sprocket for...Induction Hardened Steel GearsInfinitely Adjustable Camshaft Sprocket$251.95
- Elgin®Pro Stock CamshaftWorkhorse P-Series 5.7L 2003, Pro Stock Camshaft by Elgin®. By choosing the perfect combination of advanced metallurgies, ultra-modern design and construction, and made-in-the-USA quality, Elgin helps performance specialists take their...High quality at an affordable priceExpertly made from premium materials$125.12 - $133.64
- Milodon®Idler AxleWorkhorse P-Series 2003, Idler Axle by Milodon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...Painstakingly designed to meet your racing needsState-of-the-art manufacturing technology$65.95 - $69.95
- Milodon®Timing Cam CoverWorkhorse P-Series 2003, Timing Cam Cover by Milodon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Painstakingly designed to meet your racing needsState-of-the-art manufacturing technology$122.95 - $259.95
- Milodon®Timing Cam GearWorkhorse P-Series 8.1L with Chevy Big Block Engine 2003, Timing Cam Gear by Milodon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....Painstakingly designed to meet your racing needsState-of-the-art manufacturing technology$197.95
- Milodon®Timing Gear Drive AssemblyWorkhorse P-Series 5.7L with Chevy Small Block Engine 2003, Timing Gear Drive Assembly by Milodon®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Painstakingly designed to meet your racing needsState-of-the-art manufacturing technology$756.95 - $1,249.95
- PCE®2 Pieces Timing Cover with Inspection PlateWorkhorse P-Series 5.7L 2003, 2 Pieces Timing Cover with Inspection Plate by PCE®. PCE aluminum timing covers are the perfect way to add strength and durability to the front of your engine, not to mention increased looks. These PCE cast...Timing covers are the perfect way to add strength and durability to the front of your engineThese cast aluminum timing covers are the perfect addition to your powerhouse$39.70
- PRW®Double Roller 58 Link Timing ChainWorkhorse P-Series 5.7L with Chevy Small Block 2003, Double Roller 58 Link Timing Chain by PRW®. This product is made of high-quality components to meet and exceed strict quality requirements. Designed using state-of-the-art technology...Made with precision and quality in mindDesigned to meet your specific needs$29.81
- Replace®Cylinder HeadWorkhorse P-Series 2003, Cylinder Head by Replace®. If your vehicle has a cylinder head problem, don’t waste time and money having your originals repaired. This premium product is the best way to go for those looking for the highest...Completely disassembled, thoroughly cleaned, and carefully inspectedChecked for cracks$322.33 - $680.47
- Replace®EngineWorkhorse P-Series 2003, Engine by Replace®. 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 provide a...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$2,347.46 - $4,047.01
- Merchant Automotive®Upper Oil PanWorkhorse P42 2003, Upper Oil Pan by Merchant Automotive®. If you’re looking for high-quality aftermarket parts for your truck, you can’t go wrong with Merchant Automotive. Top-grade Merchant Automotive products are designed by...Designed using sophisticated technology and equipmentMade to combine functionality and reliability$812.56
- SKP®Engine Oil PanWorkhorse P-Series 6.5L 2003, Engine Oil Pan by SKP®. 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 from...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$79.38
- Goodyear Belts®Drive Belt Idler PulleyWorkhorse P-Series 2003, Drive Belt Idler Pulley by Goodyear Belts®. 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$15.26 - $37.87
- Goodyear Belts®Drive Belt TensionerWorkhorse P-Series 2003, Drive Belt Tensioner by Goodyear Belts®. 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...Made with precision and quality in mindDesigned to meet your specific needs$35.69 - $72.87
- ID Select®Engine Oil CoolerWorkhorse P-Series 3.9L 2003, Engine Oil Cooler by ID Select®. Swap out your worn-out or malfunctioning part with this top-notch product from iD Select. It’s built to OEM specifications to offer the same fit, form, and function as...Direct OEM replacement for your malfunctioning partMade to deliver the ultimate in quality, reliability, and value$122.50 - $140.00
