Transmission Assembly for 2016-2018 Kia Sorento
Product Notes Read before buying
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Vehicle Fitment Guide
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| LX | SUV | 2016 - 2018 | L4 2.4L | AWD | Automatic | Hollander: SORENTO 16-17 AT; 2.4L, AWD | SORENTO 18 (AT), 2.4L, AWD; engine_size: include 2.4L; drive_type: include AWD; transmission: include Automatic [inferred] |
| 2017 |
Know This Transmission Before You Buy
The research behind our purchase interview — recalls, bulletins and real install economics for this transmission family:
A quick look at your own vehicle makes sure the right transmission shows up:
- Confirm the 8th digit of the VIN is 3 (designating the 2.4L engine).
- Verify the vehicle is All-Wheel Drive (AWD).
- Confirm the existing transmission part number is 45000-3BKW0 or the etched code begins with EA or FA.
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- Engine support bar
- Subframe jack / transmission jack
- Dealer-level scan tool (Kia KDS / GDS)
Budget for these consumables at install:
- Kia Genuine ATF SP-IV (or equivalent low-viscosity SP-IV fluid)
- Front pump/torque converter input seal
- Axle seals
- Transmission cooler-line flush
- Transfer case gear oil (SAE 75W/85 API GL-5, approx. 0.7 quarts)
- Plastic front valve body cover gasket (if cover is removed)
What your vehicle’s computers will need after the swap:
What’s involved: TCM Adaptive Relearn & Oil Pressure Characteristic Values Programming
Must use a dealer-level scan tool (Kia KDS/GDS) to perform a TCM adaptive reset and input the unique oil pressure characteristic values from the bar code sticker on the transmission case. Failure to do so causes harsh shifting, slipping, and a blinking shift indicator.
Pro tips for a smooth first start-up — hand them to whoever does the install:
- Torque Converter Seating: Ensure the torque converter is fully seated (three distinct clicks/drops) before bolting to the engine to avoid cracking the internal oil pump.
- Air Pocket Prevention: Remove one of the oil cooler lines during refill to allow trapped air to escape and prevent fluid backup.
- Fluid Level Check: Check level with no dipstick at 50°C to 60°C (122°F to 140°F) using the plastic overflow plug on the front side cover while idling in Park.
- AWD Spline Inspection: Inspect and apply high-quality water-resistant grease to the mating splines between the transfer case and transmission differential to prevent rust and stripping.
- Cooler and Line Flush: Mandatory flush of the cooler lines to prevent debris from the failed unit from contaminating the replacement.
Easy to get right once you know them:
- Ordering FWD instead of AWD: FWD units lack the output shaft and mounting points for the transfer case.
- Skipping the Bar Code / Adaptive Relearn Programming: Skipping this step leads to immediate harsh shifting, slipping, and false warranty claims.
- Using the Wrong Fluid: Using generic or older SP-III fluid instead of SP-IV causes solenoid sticking and clutch wear.
- Reusing a Warped Plastic Front Cover: Reusing a warped cover leads to fluid leaks; check for flatness or replace.
Not issues with the units on this page — the manufacturer documented these for every transmission of this family, wherever you buy one. Handy for your installer:
🔎 Recommended at install: Inspect and replace the shift lock lever and holder assembly.
🔎 Recommended at install: Update the Transmission Control Unit (TCU) software logic.
🔎 Recommended at install: Program the unique bar code values printed on the transmission's sticker into the TCU using a dealer-level scan tool (KDS).
🔎 Recommended at install: Follow diagnostic and replacement procedures for individual solenoids within the valve body.
🔎 Recommended at install: Replace fluid, temperature sensor, solenoids, or the valve body assembly.
Researched from factory recalls, TSBs and OEM service data (reference unit 400-63204-3648696). Unit-specific details — mileage, condition, warranty, freight — are covered in the checkout interview.
Policies, in plain English.
Shipping & Handling
- Ships by LTL freight on a pallet — a real freight truck, not a parcel van
- Your checkout freight quote covers delivery to your door (liftgate service included for residential addresses)
- The carrier calls ahead to schedule a delivery window — someone must be present to receive it
- Typically palletized and picked up within 2–3 business days; transit time depends on distance
120-Day Warranty
This part includes a 120-day warranty.
- If the part fails within the warranty window, we'll replace it or refund per the coverage terms
- Coverage is parts-only — installation labor is not included
- Warranty covers defects — not installation errors, misuse, or damage after installation
Your pre-purchase interview reviews these exact terms with you before anything is charged.
Returns (30 Days)
We accept returns of uninstalled parts within 30 days of delivery for this part.
- Defective parts: We will replace the part or issue a refund at our discretion
- Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
- Return shipping: This part ships by freight (LTL) — the part price is refundable per the terms above, but shipping costs are non-refundable and return freight follows the seller's return terms. Your pre-purchase interview walks through the exact numbers before you buy
- Parts must be returned in original packaging and unmodified condition
- Poorly packaged returns that arrive damaged will not be credited
Damaged in Shipping?
Freight damage is rare — and you're fully protected when you do two things at delivery:
- Inspect before you sign — you're allowed time to look the pallet over while the driver waits
- Write any damage on the delivery receipt before signing — that one line is what makes a freight claim succeed
- Severe damage? Refuse the delivery — it goes back at no cost to you and we make it right
- Photograph the pallet before unwrapping; report concealed damage within 24 hours of delivery
We handle the carrier claim — you just help document it. Your pre-purchase interview walks through this checklist too.
Order Cancellation
Cancel before shipment for a full refund. Once the pallet has been built, a preparation charge may apply — and once the freight carrier picks it up, shipping costs are non-refundable and standard return terms apply. Your pre-purchase interview shows the exact numbers before you pay.
Expert Guides
2016-2018 Kia Sorento 2.4L A6MF2: Transmission Problems, Identification, and Used Replacement
Identify A6MF2 failure signs, repair costs, and what to know before buying a used OEM replacement unit.
Read Full Guide →Related Trouble Codes (OBD-II)
4 matching guidesIf your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.
Miscellaneous Information
OEM Part Numbers:
Kia: 45000-3BKW0R, 450003BKW0
Fits Years: 2016 2017 2018
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This unit ships with the selling yard's 120-day warranty. Longer plans can be requested during checkout.
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