Collection: Used Kia Engines For Sale

Browse Kia Engines by Year

Our Kia engine inventory covers every model year from 1994 through 2024. Year-specific pages are not yet live for Kia — text us your VIN and we will match the exact engine for your vehicle within minutes.

Kia Engines We Cover

Real Kia engines from our warehouse, inspected and ready to ship. A single model year can ship with more than one engine, so match by engine code rather than by vehicle — text us your VIN and we will confirm it.

Nu 2.0L GDI / MPI Inline-4

Forte, Soul, Sportage, Seltos, Optima Hybrid (2012+). Our deepest Kia line — the direct-injected GDI and the port-injected MPI versions share a block but not a head, and the hybrid runs an Atkinson-cycle variant.

Theta II 2.4L Inline-4

Optima, Sorento, Sportage, Rondo, Forte 2.4 (2006–2020). Hyundai Motor Group's mid-size four — MPI through 2010, GDI after, and the two carry different VIN codes and intake systems.

Gamma 1.6L T-GDI Turbo Inline-4

Soul Turbo, Forte GT, Seltos, K5 GT-Line, Sportage 1.6T (2016+). The turbo Gamma behind the seven-speed dry DCT — a different engine from the naturally aspirated 1.6 despite the shared family name.

Gamma 1.6L MPI / GDI Inline-4

Rio, Soul, Forte base (2012+). The naturally aspirated Gamma — GDI in the 2012–2017 cars, MPI in the later ones — plus the 1990s Sephia 1.6 of a different generation.

1.6L Hybrid Inline-4 (Kappa Atkinson / Smartstream 1.6T HEV)

Niro, Sorento Hybrid, Sportage Hybrid (2017+). The Niro runs the naturally aspirated Kappa Atkinson; the Sorento and Sportage hybrids run the turbocharged Smartstream 1.6T — locked to the hybrid powertrain either way.

Beta II 2.0L / T8D 1.8L Inline-4

Spectra, Sephia, Sportage 2.0, Optima 2.0 (1998–2010). The pre-Nu fours — Federal, California and Canada emissions builds are listed separately, and they do not interchange with the 2011-on engines.

Lambda 3.5L / 3.8L and Delta 2.7L V6

Sorento, Borrego, Sedona, Telluride, Amanti, Sportage 2.7, Optima 2.7, Rondo 2.7 (2001+). The naturally aspirated V6 line — the 2003–2009 Sorento BL is a longitudinal body-on-frame engine, the 2011-on Sorento is transverse.

Lambda II 3.3L V6 / Stinger 3.3T

Sorento, Sedona, Cadenza (2011+), Stinger GT and K900 3.3T (2018+). The GDI 3.3 in the crossovers and the twin-turbo 3.3T in the Stinger share a family, not an engine — RWD and AWD Stinger units are listed separately.

Theta II 2.0T Turbo Inline-4

Optima SX, Sportage SX, Sorento 2.0T, Stinger 2.0T (2011–2021). The turbocharged Theta — the transverse Optima and Sportage unit and the longitudinal Stinger unit do not cross-fit.

Smartstream 2.5L / 2.5T Inline-4

Sorento, K5, Sportage 2.5 (2021+), K5 GT and Sorento X-Line 2.5T. The current 2.5 — naturally aspirated behind the eight-speed automatic, turbocharged behind the eight-speed wet DCT.

More Kia Engines

Plus Tau 4.6L V8 Borrego, Nu 1.8L Forte, Sedona and Sorento units by drivetrain and emissions, Sephia and Spectra 1.5L and 1.8L fours, and Stinger units by RWD and AWD — text us your VIN.

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Why Buy a Used Kia Engine from Auto Power Source

Kia and Hyundai are one engineering group, and every engine on this page is Hyundai Motor Group hardware — the Nu, Theta II, Gamma, Lambda and Smartstream families are the same engines Hyundai fits, so a Hyundai donor is often a valid source for a Kia when the VIN engine code matches. Kia's eighth VIN digit is the engine code, and every product on this page is titled by it. Our 842 verified Kia engines cover the whole run: the Nu 2.0 and Theta II 2.4 fours in the Forte, Soul, Optima, Sportage and Sorento, the turbo and naturally aspirated Gamma 1.6 in the Rio, Soul, Forte, Seltos and K5, the 1.6 hybrids in the Niro, Sorento and Sportage, the Lambda V6 in the Sorento, Sedona, Borrego and Telluride, the 3.3T and 2.0T in the Stinger, the Smartstream 2.5 in the current Sorento, K5 and Sportage, and the Beta II and T8D fours of the 1990s and 2000s Sephia, Spectra and Sportage.

Every Kia engine we sell has been pulled from a low-mileage donor vehicle, cataloged by VIN, and stored securely until it ships to you. Each unit goes through our six-step inspection — VIN-matching against the donor and against your vehicle, full visual inspection of block, heads and timing cover, multi-angle photography for your approval, and palletized freight. Theta II and Nu GDI units get a bearing-noise and oil-consumption review, and turbo units get a turbo-shaft play inspection. Rejected units never reach the buyer.

You pay a fraction of dealer-new pricing for the same Kia engineering, ship free on a heavy-duty pallet anywhere in the continental U.S., and have 30 days from delivery to return for any reason — no restocking fees. The warranty printed on the listing — with extended coverage up to 3 years available — covers you if anything goes wrong after install. Across 100K+ engines and transmissions in stock, we hold a 0% fitment-related return rate.

Your Kia Engine Options: Compared

Most Kia owners face four real choices when the engine fails:

Inspected used OEM hits the sweet spot — same engineering as new, fraction of the cost.

Learn More: Buyer Guides

Practical guides from our team — how to install a used engine, what to check on delivery, and what really matters when buying online.

APS Preinstallation Guide

Step-by-step guide to properly installing a used engine or transmission — what to inspect, prep, and torque before first start.

Post-Install Maintenance Checklist

Keep your used unit running like new — the break-in period, fluid intervals, and warning signs to watch for.

5 Things to Know Before Buying

Warranty terms, VIN matching, mileage, inspection, return policy — the checklist every buyer should run through.

After Delivery: Inspection Guide

What to check the moment your unit arrives — freight damage, matching numbers, and what to photograph.

Frequently Asked Questions

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