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Engine · Tested

2001-2006 Kia Optima 2.4L Used Engine — VIN 6, US market

4.5 on Trustpilot · 335 reviews
Confirm it fits YOUR vehicleEnter your VIN — we verify exact fit before you pay
Find your VIN on the driver-side door jamb or lower windshield.
Unit Condition & Specs
AvailabilityIn stock — ready to ship
55% OFF $2,530.00
$1,150.00
Mileage
✓ Flat-rate freight — insured & tracked ·✓ 90-day warranty included· freight shown at checkout: $250 commercial / $400 residential
Ships within 3 - 5 business days Approx - flat-rate freight, tracked & insured Most orders arrive 5–7 business days after dispatch (US). You get tracking the moment it ships.
Not sure it fits? Call an expert
🛡90-Day WarrantyParts replacement
🚚Flat-Rate FreightDelivered to your door
🔒Secure CheckoutEncrypted payment
↩24-Hr Free CancelFull refund within 24h

How ordering works

  1. 1Enter or confirm your VIN
  2. 2We verify exact fitment for your vehicle
  3. 3Flat freight shown up front — no surprises
  4. 490-day warranty included on every part
  5. 5We photograph & confirm the unit before it ships
What you're getting

What's included with this engine

You're buying a complete engine assembly — not a bare block. Here's exactly what arrives bolted to it, and the handful of accessories your mechanic moves over from your current engine during the install.

✓

Included with your engine

Already assembled — ships as one unit
  • Long block — fully assembled
  • Short block
  • Cylinder head
  • Crankshaft
  • Camshaft
  • Pistons
  • Intake manifold
  • Exhaust manifold
  • Oil pan
  • Timing cover
⇄

Not included — transfer these over

Reused from your current engine
  • Wiring harness
  • Bolt-on accessories
Why these aren't included: these parts are tied to your vehicle's exact trim and options, and the ones already on your current engine are almost always in good working order. Your mechanic transfers them across during the install — that's standard practice on an engine replacement, and it keeps your price down.
Quick definition: a short block is the block, crankshaft, camshaft and pistons. A long block adds the cylinder head and valvetrain. A complete engine — what you're buying here — is the long block with the intake manifold, exhaust manifold, oil pan and timing cover already fitted.
Not sure what your install needs? Talk to a parts expert
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Part details

About this part

Kia Optima 2.4L DOHC Engine For 2001-2006 Models

This 2.4L "Beta" DOHC engine delivers a solid 149 horsepower, providing dependable and efficient power for the first-generation Kia Optima sedan. As the larger and more powerful engine option for this platform, it established the Optima as a credible competitor in the midsize family sedan segment, known for its smooth operation and durability.

Engine Specifications:

Category Details
Engine Code Beta
Displacement 2.4L Inline-4
Aspiration Naturally Aspirated
Horsepower 149 HP 
Torque 156 lb-ft 
Fuel System Multi-Port Fuel Injection
Valvetrain DOHC 16-valve
VIN Requirement 8th digit = 6
Drivetrain Front-Wheel Drive
Engine Block  Aluminum alloy cylinder head
 

Key Features:

Complete Long Block Assembly: This comprehensive engine assembly includes all essential components: engine block, crankshaft, pistons, cylinder head, and complete valvetrain system.

Refined & Dependable: Precision-engineered Kia turbocharged GDI engine designed for low-emission output, reinforced sealing systems, and refined mechanical quietness. Engineered for stable, trustworthy performance with full warranty protection.

Backed by Warranty: Full engine assembly with robust warranty coverage giving you peace of mind and assurance in dependable, sustained performance.

Pricing Options:


Mileage Range Price Condition
30K-60K miles $ 1,975.00 Premium Low mileage. Includes full accessory suite and manifold.
60K-90K miles $ 1,650.00 Excellent condition, strong performance history, ready for installation.
90K-120K miles $ 1,350.00 Good running condition, perfect for a daily-driven performance replacement.
120K-150K miles $ 1,150.00 Functional core unit. Ideal for rebuild 
 

Shipping Information:

Standard shipping 5-7 business days.

Expedited shipping available for an extra cost.

Frequently Asked Questions?

Q: How do I confirm my first-gen Optima has the 2.4L engine?

A: The 8th digit of your Vehicle Identification Number (VIN) must be "6". The 2.4L was the larger, optional engine for LX and EX trims from 2001-2006. 

Q: What comes with my used engine?

A: Engine Block, Head Gasket, Cylinder Heads, Manifolds, consumption, Exhaust, Timing cowl, Oil Pans, Cylinder Head, Pistons, Crank Shafts.

Q: How do I track my shipment?

A: After you place your order, our team sends detailed photos and tracking information for your approval before shipment. We ensure complete transparency and your confidence in every transaction with Best Use Auto Parts.

Ready to Order?

Direct-fit 2.4L engine for 2001–2006 Kia Optima models. Verify fitment by checking the 8th digit of your VIN it must read "6". Includes 60-day warranty. Replace timing belt and water pump during installation. 

Order with confidence

Tested, VIN-matched, and guaranteed

✓

VIN-Verified Fit

We match the part to your vehicle's VIN and confirm exact fitment before we ship — so it fits the first time. Free cancellation within 24 hours.

⚙

Works on Arrival, Guaranteed

Every unit is tested before it ships. If it arrives defective, we replace it fast — and in the rare case we can't replace it, you get a full refund.

★

90-Day Warranty

A real parts-replacement warranty, included — with extended coverage available.

✓Photos of your exact unit on requestSent before it ships — just ask
✓A-grade OEM, testedVerified specs, not estimated
✓VIN-matched to your vehicleConfirmed before dispatch
Shipping & delivery

Heavy freight item, shipped fully insured and tracked. Freight is a flat $250 commercial / $400 residential, shown at checkout — no hidden fees, no freight-quote runaround.

1Ships within 3 - 5 business days ApproxCarefully packed & dispatched from our US warehouse
2Freight to your doorBrought to your door
3Delivered in 5–7 business daysTracked & insured · tracking sent when it ships
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