2003 Ford Explorer Sport Trac Engine for Sale: What You Need to Know

Overview of the 2003 Ford Explorer Sport Trac

The 2003 Ford Explorer Sport Trac was a unique mid-size pickup built on the Explorer platform. It combined the utility of a truck bed with the ride comfort of an SUV. Under the hood, Ford offered two engine options, both reliable workhorses that are still available on the used market.

Engine Options for the 2003 Sport Trac 4.0L SOHC V6 (Standard Engine)

• Displacement: 4.0 liters, single overhead cam
• Horsepower: ~210 hp @ 5,250 rpm
• Torque: ~254 lb-ft @ 3,000 rpm
• Transmission pairing: 5-speed automatic (5R55W)
• Notes: Known for timing chain issues at high mileage; inspect before purchase

4.6L V8 (Available in XLT/Adrenalin trims)

• Displacement: 4.6 liters SOHC
• Horsepower: ~239 hp
• Torque: ~282 lb-ft
• Notes: More powerful option, less commonly found used

Common Engine Problems to Know About

When buying a 2003 Ford Explorer Sport Trac engine for sale, watch for:

• Timing chain tensioner wear (4.0L V6) — can cause rattling on startup
• Oil leaks from valve cover gaskets
• Coolant leaks at the intake manifold
• High idle or rough running due to IAC valve buildup

Where to Buy a 2003 Ford Explorer Sport Trac Engine

• Pull-a-Part and LKQ salvage yards: Often have 2003-era Ford Explorer V6 engines available
• Online dealers (EngineWorld, AutoZone Reman): Tested, warranty-backed options
• eBay Motors and Facebook Marketplace: Lower prices but verify mileage and condition
• Ford dealership network parts departments: For remanufactured or NOS units

Price Range

• Used 4.0L V6: $400–$900 (depending on mileage and source)
• Used 4.6L V8: $600–$1,200
• Remanufactured 4.0L V6: $1,200–$2,000 with warranty

Installation Cost

Expect to pay $800–$1,500 in labor at a shop, depending on your region. The 4.0L V6 swap is relatively straightforward for a Ford-experienced mechanic.

FAQs Q: Is the 2003 Sport Trac engine the same as the Explorer engine?

A: Yes — the Sport Trac shares its engine block, mounts, and transmission with the 2002–2005 Ford Explorer, making parts widely interchangeable.

Q: How many miles can the 4.0L V6 last?

A: With regular maintenance (oil changes every 5,000 miles, timing chain serviced), many owners report 200,000+ miles.

Conclusion

Finding a 2003 Ford Explorer Sport Trac engine for sale is relatively straightforward given how many of these vehicles ended up in salvage yards. Focus on the 4.0L V6, verify the timing chain condition, and buy from a reputable seller with at least a 4 years 40k miles warranty.