2004 Ford Explorer Engine
Option: 4.0L (SOHC), VIN K (8th digit), Sport Trac, 4x4
🔍 Find Your Part▾
✅ Why Car Part Planet
- 🛡Up to 60-Month WarrantyInternal components covered on 2001+ personal vehicles.
- 🚚Flat Rate Shipping$299 to commercial · $99 liftgate fee for residential.
- 💰No Core Deposit on UsedKeep your old engine. No return required on used orders.
- 🔍QA InspectedEvery engine passes quality checks before shipment.
- 📞Live Specialist SupportMon–Fri 9AM–7PM · Sat 11AM–4PM EST.
- 🔄Direct ReplacementExact-match fitment for your vehicle.
Used EnginePre-Owned · Cost-Effective
Direct replacement · No core deposit
Used Options:
$2297
SKU: e-u_4406
Condition Used
Shipping $299
Mileage 121K mi
Core Deposit Not Required
Warranty 5 Years / 50,000 Miles - Parts Only*
Total Delivered $2596
Note N/A
🚚
Flat Rate Shipping
$299 commercial · $99 liftgate fee residential
🛡
Up to 5-Year Warranty
Unlimited miles on personal vehicles 2001+
🔄
No Core Charge — 30 Days
Keep your old engine up to 30 days
🔍
QA Inspected
Every unit passes quality checks before shipping
🚚
Flat Rate Shipping
$299 commercial · $99 liftgate fee residential
🛡
Up to 5-Year Warranty
Unlimited miles on personal vehicles 2001+
🔄
No Core Charge — 30 Days
Keep your old engine up to 30 days
🔍
QA Inspected
Every unit passes quality checks before shipping
Remanufactured EngineFactory-Rebuilt · Like-New Quality
Rebuilt to Meet and Exceed OEM spec · Dyno tested
Remanufactured Options:
$2926
SKU: e-r-n_299-4
Condition Remanufactured
Shipping (Free Core Return) $299
Mileage 0 mi — Rebuilt
Core Deposit $450 (Refundable)
Warranty 3 Year / 100,000 Miles - Included*
Total Delivered $3675
Note N/A
🚚
Flat Rate Shipping
$299 commercial · $99 liftgate fee residential
🛡
Up to 5-Year Warranty
Unlimited miles on personal vehicles 2001+
🔄
No Core Charge — 30 Days
Keep your old engine up to 30 days
🔍
QA Inspected
Every unit passes quality checks before shipping
🚚
Flat Rate Shipping
$299 commercial · $99 liftgate fee residential
🛡
Up to 5-Year Warranty
Unlimited miles on personal vehicles 2001+
🔄
No Core Charge — 30 Days
Keep your old engine up to 30 days
🔍
QA Inspected
Every unit passes quality checks before shipping
Used VS Reman
Please rotate your deviceAttribute
Used
Remanufactured
🔖 Identification
SKU
e-u_4406
e-r-n_299-4
Condition
Used — Prior Vehicle
Remanufactured — Rebuilt
Odometer Miles
121K mi
0 mi — Rebuilt
⚙️ Engine Specifications
Engine Size
4.0
4.0
Transmission Drive Type
AWD
AWD
VIN
K
K
Cylinder Quantity
Original (used)
6
Fuel Type
Original (used)
Gas
Assembly Lubricant Included
No
No
Cylinder Head Material
Original (used)
Aluminum
Engine Block Material
Original (used)
Iron
Engine Block Type
Original (used)
V6
Engine Displacement
Original (used)
4.0 liter / 245 cubic inches
Engine Oil Pump Included
Yes
Yes
Engine Water Pump Included
No
No
Exhaust Manifold Included
Original (used)
No
Flexplate Included
No
No
Flywheel Included
No
No
Fuel Injectors Included
No
No
Gasket Set Included
No
Yes
Harmonic Balancer Included
No
No
Intake Manifold Included
Original (used)
No
New or Remanufactured
Original (used)
Remanufactured
Oil Dipstick Tube Included
Original (used)
No
Oil Pan Included
Original (used)
Yes
Piston Rings Included
Original (used)
Yes
Pushrods Included
Original (used)
Yes
Rocker Arms Included
Original (used)
Yes
Spark Plugs Included
No
No
Spark Plug Wires Included
No
No
Thermostat Included
No
No
Throttle Body Included
No
No
Timing Components Installed
Original (used)
Yes
Timing Cover Included
Original (used)
Yes
Timing Set Included
Original (used)
Yes
Valve Covers Included
Original (used)
No
Valve Seals Included
Original (used)
Yes
Valves Included
Original (used)
Yes
Valve Springs Included
Original (used)
Yes
Wiring Harness Included
No
No
Fluid Included
No
No
🏗️ Materials & Build
Block Machined
Original (used)
✓ Machined to OEM spec
Heads Machined
Original (used)
✓ Resurfaced & inspected
New Pistons
Original (used)
✓ New / remanufactured
New Bearings
Original (used)
✓ All new bearings
New Seals & Gaskets
Original (used)
✓ Full gasket set
New Camshaft
Original (used)
✓ New or remanufactured
New Timing Components
Original (used)
✓ Chain, guides & tensioners
📦 What's Included
Engine Block
✓
✓
Cylinder Heads
✓
✓
Intake Manifold
Original (used)
✓ Included
Oil Pan
✓
✓
Valve Covers
✓
✓
Alternator
Original (used)
Not included
AC Compressor
Original (used)
Not included
Starter
Original (used)
Not included
Power Steering Pump
Original (used)
Not included
🔬 Quality & Testing
Quality Inspection
Visual QA
Full rebuild inspection
Dyno Tested
✗ No
✓ Yes
Cleaned & Degreased
Basic cleaning
✓ Full hot tank / vapor blast
🚚 Purchase & Logistics
Sale Price
$2297
$2926
Shipping
$299
$299
Total Delivered
$2596
$3675
Core Deposit
Not Required
$450 (Refundable)
Est. Ship Time
Ships in 24-48 hours
Ships in 24-48 hours (in stock items)
Residential Liftgate
+$99 surcharge
+$99 surcharge
🛡️ Warranty Coverage
Used Engine Warranty
Remanufactured Engine Warranty
Personal Use (Gasoline)
Personal Use (Gasoline)
• Year 2000 & Older: 3 years / 36,000 miles (parts only)
• Year 2000 & Older: 3 years / Unlimited miles with labor reimbursement ($50/hr)
• Year 2001 & Newer: 5 years / 50,000 miles (parts only)
• Year 2001 & Newer: 5 years / Unlimited miles with labor reimbursement ($50/hr)
Commercial Use (Gasoline)
Commercial Use (Gasoline)
• Year 2001 & Newer: 18 months / 36,000 miles (parts only)
• Year 2001 & Newer: 3 years / 75,000 miles (labor reimbursed $50/hr)
Diesel Engines
Diesel Engines
• 12 months / 12,000 miles (parts only)
• 12 months / 12,000 miles with labor reimbursement ($50/hr)
Coverage Type:
Coverage Type:
• Parts only (no labor reimbursement)
• Parts & labor reimbursed (approved claims)
• Only internal engine components covered
• Full remanufactured engine defects covered
• Claim reimbursement cannot exceed purchase price
• Nationwide warranty with labor reimbursement ($50/hr)
• Does not cover external accessories or installation defects
• Labor reimbursed after certified inspection by factory
🟠 Used Engine — What's Included
Arrives complete without: alternator, AC compressor, starter, or power steering pump. You will need to transfer these bolt-on accessories from your old engine.
- Used transmission unit pulled from a donor vehicle and visually inspected.
- Torque converter included for automatic transmissions.
- Complete transmission housing and all internal components (gears, shafts, etc.) included.
- No additional accessories or sensors unless left on for convenience (customer must transfer/exchange exterior parts as needed).
🔵 Remanufactured Engine — What's Included
Rebuilt to original factory specifications using new and remanufactured components. Machined, cleaned, and tested for performance.
- Complete remanufactured transmission fully rebuilt to meet or exceed OEM specs.
- A remanufactured and improved torque converter included with every transmission.
- Torque converters tested for leaks, lock-up, balance, and concentricity to reduce leaks and premature wear.
- Fully remanufactured valve body with a complete system correction and recalibration kit, tested independently.
- All wear-prone valves restored to strict specifications and vacuum tested.
- Transmission undergoes hot, cold, load, and simulated road testing using proprietary dynamometer programs.
- Backed by nationwide warranties (industry-leading coverage, often 5 yrs/unlimited mileage for automatics).
- Meets or surpasses OEM quality standards with all internal components either replaced or re-machined.
🛡
Up to 60-Month Warranty
Covers internal components on personal vehicles 2001+
🚚
Flat Rate Shipping
$299 commercial · $99 liftgate fee for residential
🔍
QA Inspected
Every engine passes visual and functional quality checks
📞
Expert Specialists
Mon–Fri 9AM–7PM · Sat 11AM–4PM EST
👨🔧
Not sure which engine fits your Explorer?
Our specialists will match the exact unit for your year, engine, and drivetrain — free of charge.
⚠ California Prop 65 Warning: This product may expose you to chemicals known to the State of California to cause cancer and reproductive harm.