Used OEM Part · Tested

Kia Optima 2.4L (VIN 3, 8th digit) 2.4L Engine (2016-2020)

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Unit Condition & Specs
AvailabilityIn stock — ready to ship
$3,800.00
✓ Flat-rate freight — insured & tracked ·✓ 90-day warranty included· freight shown at checkout: $250 commercial / $400 residential
Ships within 3 business days — flat-rate freight, tracked & insured Most orders arrive 5–7 business days after dispatch (US). You get tracking the moment it ships.
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Part details

About this part

Kia Optima 2.4L MPI Engine For 2016-2020 Models

This 2.4L "Theta II" Multi-Port Injection (MPI) engine delivers dependable 185 horsepower, serving as the standard, high-volume powerplant for the fourth-generation Kia Optima. Renowned for its balance of adequate power and superior reliability, this engine avoided the complexity of direct injection, offering a straightforward and durable solution for a midsize sedan.

Engine Specifications:

Category Details
Engine Code Theta II MPI
Displacement 2.4L Inline-4
Aspiration Naturally Aspirated
Horsepower 185 HP 
Torque 178 lb-ft 
Fuel System Multi-Port Fuel Injection
Valvetrain DOHC 16-valve, Dual CVVT
VIN Requirement 8th digit = 3
Transmission 6-Speed Automatic
Drivetrain Front-Wheel Drive
Engine Block Aluminum alloy cylinder heads
 

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: Kia Optima 2.0L Theta II turbo GDI engine engineered for clean emissions, sealed against leaks, and quiet mechanical operation. Delivers consistent, reliable performance with warranty protection.

Backed by Warranty: Complete assembly coverage backed by comprehensive warranty protection ensuring confidence in long-term reliability and performance.

Pricing Options:

Mileage Range Price Condition
<30K miles $ 2,910.00 Low mileage, excellent compression, minimal wear. 
30K-60K miles $ 2,660.00 Well-maintained, clean components, ready for a reliable installation.
60K-90K miles $ 2,450.00 Solid functional core, perfect for a straightforward powertrain replacement.
90K-120K miles $ 2,400.00 Higher-mileage core. Ideal for budget repairs 
 

Shipping Information:

Standard shipping 5-7 business days.

Expedited shipping available for an extra cost.

Frequently Asked Questions?

Q: How do I confirm my Optima has this 2.4L MPI engine?

A: The 8th digit of your Vehicle Identification Number (VIN) must be "3". For the 2016-2020 model years, this was the standard engine in the Optima LX, EX, and S trims. 

Q: Which engine and transmission options are in stock?

A: Sourced from our comprehensive catalog of inspected, pre-owned powertrains, this 2012-2015 Kia Optima 2.0L Theta II turbo GDI engine represents quality used inventory. Best Use Auto Parts maintains deep stock of OEM engines, transmissions, and components across all fuel types and vehicle platforms.

Q: What warranty is provided?

A: This engine is covered by a 60-day warranty. Its simple design contributes to our confidence in offering solid coverage. The warranty requires professional installation and the replacement of the timing chain tensioner during installation.

Ready to Order?

Order today and get your Optima back on the road with a proven, dependable engine solution.
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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.

Real photos of the exact unitWhat you see is what ships
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.

Heavy freight item. Shipping is already included in your price — no freight quote, no surprise fees at checkout.

1Ships within 3 business daysCarefully packed & dispatched from our US warehouse
2Freight to your doorCurbside / liftgate
3Delivered in 5–7 business daysTracked & insured · tracking sent when it ships
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