Transmission Assembly for 2019 Acura RDX
Product Notes Read before buying
This transmission is for All-Wheel Drive (AWD) models only. It will not fit Front-Wheel Drive (FWD) vehicles.
Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
Vehicle Fitment Guide
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| A-Spec | SUV | 2019 | L4 2.0L Turbo | AWD | Automatic |
| SH-AWD | SUV | 2019 | L4 2.0L Turbo | AWD | Automatic |
| Tech | SUV | 2019 | L4 2.0L Turbo | AWD | Automatic |
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:
- Verify the 5th and 6th digits of the VIN are TC2 (confirming AWD).
- Verify the transmission code on the white barcode label is PYKA or MPYA.
- Confirm the engine is the 2.0-liter Turbocharged 4-cylinder (K20C4).
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- Engine support fixture
- Subframe adapter/jack
- Heavy-duty transmission jack
- OBD2 diagnostic scan tool with Honda/Acura OEM capabilities (HDS or compatible J2534 device)
Budget for these consumables at install:
- Acura/Honda ATF Type 2.0 (Do NOT use ATF Type 3.1 or DW-1)
- Transmission Filter (Part Number: 25450-P4V-013)
- Filter O-ring (Part Number: 91305-PN4-003)
- Warmer/Cooler Housing O-rings (Part Numbers: 25564-5LJ-A01 and 25565-5LJ-A01)
- Acura/Honda HGO-1 (Hypoid Gear Oil) or synthetic 75W-85 / 75W-90 gear oil for the transfer case
- Torque converter hub seal (input shaft seal)
- Front axle seals
- Transmission cooler-line flush solvent
What your vehicle’s computers will need after the swap:
What’s involved: TCM Adaptive Relearn (Clutch Estimate Relearn) and Software Calibration Check
The Transmission Control Module (TCM) must have its learned values cleared and go through a clutch adaptive learning procedure to adapt to the replacement unit. Failure to perform this will cause extremely harsh shifting, slipping, or dashboard warnings.
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 into the front pump (rotating and pushing until it drops 2-3 times) before bolting to the engine to avoid cracking the internal oil pump gear.
- Subframe & Engine Support: The front subframe must be dropped to remove/install the transmission; the engine must be supported from above.
- AWD Transfer Case Spline Alignment: Carefully align the splines of the intermediate shaft when reinstalling the transfer case to prevent damage, and replace/lubricate the transfer case O-rings.
- Strict Fluid Level Check Procedure: No dipstick is present. The vehicle must be level on a lift with the engine running. Monitor fluid temp via scan tool to 104°F-113°F, then open the overflow bolt on the side of the case and let fluid drain to a slow drip.
- Filter Location: The spin-on filter is located inside the transmission warmer/cooler assembly, which must be unbolted from the case to access.
Easy to get right once you know them:
- Using the Wrong Transmission Fluid: Using universal ATF, Honda DW-1, or ATF Type 3.1 instead of the mandatory Acura/Honda ATF Type 2.0.
- Confusing AWD and FWD Transmissions: Ordering a FWD transmission (PYJA) for an AWD vehicle (PYKA). Always verify the 5th and 6th VIN digits are TC2.
- Failing to Flush the Cooler Lines: Reusing contaminated cooler lines and fluid warmers, which washes debris back into the new transmission.
- Mistaking the Fill Plug for the Level Check Plug: Misidentifying the ports, leading to severe overfilling.
- Reusing the Old Warmer Filter: Skipping the replacement of the inline filter, which restricts fluid flow and causes overheating.
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: Install updated intercooler assembly to prevent condensation pooling that causes engine misfires and forces transmission into limp mode.
🔎 Recommended at install: Address internally rusted or corroded rear differential clutch linear solenoid valves.
🔎 Recommended at install: Apply ONEpack Update #7 and subsequent TCM software updates, including clutch break-in procedure and software recalibration.
🔎 Recommended at install: Ensure PCM/TCM software is fully updated to the latest factory calibration to prevent miscommunication between engine, transmission, and throttle control computers.
🔎 Recommended at install: Full transmission replacement; often evidenced by metal shavings in the fluid at 60k-80k miles.
Researched from factory recalls, TSBs and OEM service data (reference unit 400-10922-5530242). 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
2019 Acura RDX 2.0L Turbo Transmission: Problems, Identification, and Used Replacement
Identify the PYKA/MPYA transmission, learn what causes harsh shifting and limp mode, and know when to replace it with a used OEM unit.
Read Full Guide →Related Trouble Codes (OBD-II)
1 matching guideIf 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:
Acura: 20021-5YK-A55, 200215YKA55
Fits Years: 2019
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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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