Collection: Used Kia Transmissions For Sale

Browse Kia Transmissions by Year

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

Kia Transmissions We Cover

Real transmissions from our warehouse, VIN-matched and ready to ship. Kia shares nearly its entire transmission catalog with Hyundai through Hyundai Motor Group, so a Hyundai donor is often the correct part for a Kia and the code on the case matters more than the badge. Kia's own wrinkle is the longitudinal RWD line — Stinger and K900 on the A8LR1, and Borrego and the body-on-frame Sorento BL on the F5A51.

A6MF / A6LF 6-Speed Transaxle

Optima, Sorento, Sportage, Sedona, Forte (2010+). The volume transverse 6-speed — A6LF and A6MF are different torque classes. Highest demand.

A8LF 8-Speed Transaxle

Telluride, Sorento, K5 2.5L (2019+). The modern 8-speed transverse transaxle across the current Kia line.

A8LR1 8-Speed RWD (Stinger, K900)

Stinger, K900, Genesis G70/G80 crossfit (2017+). Longitudinal RWD 8-speed — shares nothing with the FWD A8LF.

7-Speed Dry Dual-Clutch (DCT)

Forte, Soul, Rio, K5 1.6T (2014+). Dry-clutch DCT for the smaller-displacement engines — check clutch pack condition.

8-Speed Wet Dual-Clutch (DCT)

K5 GT, Sorento Hybrid, Sportage Hybrid (2020+). Wet-clutch DCT for higher-output and hybrid duty — not a dry-DCT substitute.

F4A41 / F4A42 4-Speed Transaxle

Older Optima, Sorento, Sedona, Spectra (2000–2010). The classic HMG 4-speed transaxle before the A6MF family.

F5A51 5-Speed RWD/4WD (Borrego)

Borrego V8, Sorento BL RWD/4WD (2003–2011). Body-on-frame longitudinal 5-speed — the Sorento BL is a different vehicle from the 2011+ unibody Sorento.

eCVT Hybrid Transaxle

Niro Hybrid, Optima Hybrid, older Sorento Hybrid (2017+). Power-split hybrid transaxle — locked to model year and powertrain.

IVT (Intelligent Variable Transmission)

Forte, Soul, Rio (2019+). HMG's chain-driven CVT — fluid service history is critical on these.

M5SR1 5-Speed Manual Transaxle

Forte, Rio, Soul base (2010+), Accent crossfit. Compact economy-car manual transaxle.

M6CF1 6-Speed Manual Transaxle

Forte SX, older Optima SX, Soul (2010+). The 6-speed manual — a different unit from the 5-speed M5SR1, not an upgrade of it.

More Kia Transmissions

Plus A6GF variants, Telluride and Sorento AWD couplings, EV6 and Niro EV reduction gearboxes, older Spectra and Rio units, and special-order requests — text us your VIN.

Trustpilot

Why Buy a Used Kia Transmission from Auto Power Source

Kia and Hyundai are one engineering group, and the transmission catalog shows it. The A6MF and A6LF 6-speed transaxles, the A8LF 8-speed, the 7-speed dry DCT and 8-speed wet DCT, the IVT, and the eCVT hybrid transaxle all appear on both sides of Hyundai Motor Group under the same design. In practice that widens your options considerably — a unit pulled from a Sonata or a Santa Fe is frequently the correct part for an Optima or a Sorento — but it also means the code stamped on the case is what identifies the part, not the badge on the tailgate. Kia's own distinction is the longitudinal RWD line: Stinger and K900 run the A8LR1, and the Borrego and the body-on-frame Sorento BL ran the F5A51.

Every Kia transmission we sell has been pulled from a low-mileage donor, cataloged by VIN, and held in our climate-controlled warehouse. Each unit goes through our six-step inspection: VIN-matching, ASE Shift-Testing through every gear under load, noise verification, full visual inspection of case, pan, and bellhousing, multi-angle photography, and palletized freight shipping. DCT units get clutch pack inspection under load, and IVT and eCVT units get fluid-service review. 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 you have 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, and our six-step inspection has held our fitment-related return rate at 0% across 100,000+ shipments.

Your Kia Transmission Options: Compared

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

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

Kia Transmission Buying Guide

Kia shares nearly its entire transmission catalog with Hyundai, so matching runs on the code stamped on the case rather than the badge. Five things to verify before buying a used Kia transmission:

1. Match the full transmission code, and treat Hyundai donors as valid. The A6MF, A6LF, A8LF, A8LR1, DCT, and IVT families are all shared across Hyundai Motor Group, so a unit pulled from a Hyundai is frequently the correct part for a Kia. What matters is the complete code stamped on the case — send us that or the VIN and we match on it.
2. A6LF and A6MF are different torque classes. They share a family name but are matched to different engine families — the A6LF to the smaller Gamma and Nu engines, the A6MF to the larger Theta and Lambda. The suffix number narrows it further. Ordering across the two will not give you a working car.
3. 7-speed dry DCT and 8-speed wet DCT are not substitutes. The dry DCT sits behind the smaller-displacement engines (Forte, Soul, Rio, K5 1.6T); the wet DCT handles higher output and hybrid duty (K5 GT, Sorento Hybrid, Sportage Hybrid). Different clutch packs, cooling, and control calibration.
4. Sorento is two different vehicles — check the generation, not the name. The 2003–2009 Sorento BL is body-on-frame with a longitudinal F5A51 RWD/4WD transmission. The 2011+ Sorento is a unibody crossover running a transverse A6MF or A8LF transaxle. Same nameplate, no shared transmission. The Borrego is the other longitudinal Kia; Stinger and K900 run the A8LR1.
5. Hybrid eCVT and IVT are service-history units. The eCVT power-split transaxle is locked to its model year and powertrain, and the IVT is a chain-driven CVT whose life depends almost entirely on fluid-service intervals. We pull the donor's history on request for both.

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

Learn More: Kia Transmission Guides

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

APS Preinstallation Guide

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

Post-Install Maintenance Checklist

Keep your used transmission 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, testing, return policy — the checklist every buyer should run through.

After Delivery: Inspection Guide

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

Frequently Asked Questions

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