Collection: Used Kia Engines For Sale | Auto Power Source

Browse Kia Engines by Year

Year-specific pages coming online weekly — text us your VIN and we will match you to the right Kia engine from our verified inventory today.

Kia Engines We Cover

Real engines from our warehouse, tested and ready to ship. Our Kia inventory spans every major Kia engine family produced for the U.S. market.

Lambda 3.5L V6 (Workhorse)

Telluride, Sorento, Sedona, K900 (2010+). The volume Kia V6 — dual VVT, 60-degree architecture. Highest demand for Telluride/Sorento applications.

Theta II 2.4L Inline-Four (NA)

Optima, Sorento, Sportage (2010+). Aluminum block with GDI direct injection. Rod-bearing inspection on each unit — ask us for details.

Theta II 2.0T Turbo Inline-Four

Optima SX, Sorento SX, Stinger 2.0T (2011+). Twin-scroll turbo, GDI. Rod-bearing inspection on each unit. Tested and warrantied.

Lambda II 3.3T Twin-Turbo V6 (Stinger GT)

Stinger GT, K900, Genesis G80 Sport crossfit (2017+). Performance V6 with twin turbos and GDI — 365 hp. Performance demand.

Gamma 1.6T GDI Turbo Inline-Four

Soul Turbo, Forte GT, K5 GT-Line, Seltos (2014+). Compact turbo-four with GDI. Tested and warrantied.

Gamma 1.6L MPI Inline-Four (NA)

Rio, Soul, Forte base (2010+). Multi-port-injection economy four — the simple, reliable Kia entry-level engine. Tested and warrantied.

Nu 2.0L GDI Inline-Four

Forte 2.0, Soul 2.0, Sportage (2011+). GDI direct injection, mid-size four-cylinder. Tested and warrantied.

Smartstream 2.5T Turbo Inline-Four

K5 GT, Sorento X-Line, Stinger 2.5T 2022+ (Theta II replacement). Twin-scroll turbo, dual injection. Tested and warrantied.

Smartstream 1.6T Hybrid Inline-Four

Sorento Hybrid, Sportage Hybrid, Niro Hybrid (2020+). Turbocharged hybrid — must match donor model and year. Tested and warrantied.

Tau 5.0L V8 (Rare — K900)

Older K900 V8, Genesis G90 5.0 crossfit. Kia's only V8 — low production volume, specialist sourcing. Tested and warrantied.

Kappa 1.6L Hybrid Inline-Four

Niro Hybrid, older Soul mild-hybrid (2017+). Atkinson-cycle hybrid four. Tested and warrantied.

Why Buy a Used Kia Engine from Auto Power Source

We have spent over a decade sourcing quality Kia engines from carefully vetted suppliers across North America. Our 499+ verified Kia engines span every major Kia engine family across model years from the 1990s through present. Every Kia engine we sell has been pulled from a low-mileage donor vehicle, cataloged by VIN, and held in our climate-controlled warehouse pending sale.

Each unit went through our six-step inspection — VIN-matching, ASE testing, noise & smoke verification, full visual inspection, multi-angle photography, and palletized shipping. Our ASE-certified technicians compression-test every cylinder and run leak-down evaluation on engines. Transmissions are Shift-Tested through all gears — rejected units never reach the buyer.

You pay a fraction of dealer-new pricing for identical Kia engineering, ship free on a heavy-duty pallet anywhere in the continental U.S., and get 30 days from delivery to return for any reason — no restocking fees. Up to a 3-year warranty covers you if anything goes wrong after install. Across 46,000+ engines and transmissions shipped, we hold a 0% fitment-related return rate.

Your Kia Engine Options: Compared

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

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

Kia Engine Buying Guide

Five things to verify before buying a used Kia engine:

1. Match the engine code by VIN. Kia engines often share displacement but differ in compression, valvetrain, and emissions hardware. Always verify the engine code, not just "3.5L V6" — it could be one of several different units.
2. Confirm trim and emissions package. California-emissions ULEV variants, federal-emissions models, and PZEV variants often share displacement but use different ECU calibration and exhaust hardware.
3. Verify auto vs. manual transmission application. Kia flywheel and starter geometry can differ between AT and MT applications even at the same displacement.
4. For turbocharged variants, ask about turbo condition. Inspect the turbocharger compressor and turbine wheels, wastegate, and intercooler condition before paying.
5. Always run the donor vehicle VIN if available. We provide this on request for any engine in our inventory — helping you verify mileage and service history.

Our ASE-certified technicians verify every one of these points against your VIN before any engine ships.

Frequently Asked Questions

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