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AWF21 Pump 2008-2012

$69.98
In stock • ships from the USA

AWF21 Pump 2008-2012, new other (see details) and ready to install. Fits the AWF21. Ships fast from the USA.

Secure Stripe checkout • free shipping over $100 • 30-day returns
Secure Stripe checkout
Ships from the USA
30-day returns

About this product

The AWF21 is the Aisin AW six-speed front-drive transaxle also sold as the TF-80SC, and in North America it is best known in Volvo models such as the XC90. If your 2008-2012 car takes too long to engage Drive, slips or flares across several gears when hot, or whines with engine speed, a worn front pump can be the reason. This AWF21 pump is listed for 2008-2012 and is in new-other condition, meaning unused; read the listing details for packaging notes.

What the pump does in an AWF21

The AWF21 builds six speeds from a Lepelletier gearset, a simple planetary feeding a Ravigneaux set, and every shift is clutch-to-clutch. That design asks a lot of the hydraulics: the oncoming clutch has to fill at the exact moment the off-going one releases, and the converter clutch can lock in all six gears. The pump, driven by the converter hub, supplies all of it. Its output becomes line pressure, which the valve body divides among the clutches, brakes, converter and cooler. When the pump loses volume, those timed fills get slow and every shift starts to suffer at once.

Symptoms of a worn AWF21 pump

How to confirm it before you buy

This transaxle has two well-known faults that feel like pump trouble. Sonnax describes wear in the solenoid modulator valve bore: low modulator pressure hurts engagements and the boost oil for line pressure rise, while wear at the other end floods the solenoids and makes shifts harsh. On 2011-2013 Volvos, Technical Journal 26840 traces rough 5-4 downshifts, N-D harshness and code P089500 to an internal tolerance deviation that the dealer fixes with TCM software. Rule both out first. Check the fluid level at the fill plug, read codes with a scan tool that reaches the TCM, then gauge line pressure. Low pressure in every range with clean fluid points to the pump. Our guides on Aisin harsh and delayed shifts and a flare versus a true slip help sort it out.

Fitment

This pump is listed for the 2008-2012 AWF21 (TF-80SC). The same Aisin family includes the TF-81SC, which Ford and Mazda use, and parts that look alike do not always interchange between the two. Match your transaxle's ID plate, then compare the pump bolt pattern, stator shaft splines and seal size with your original, or send us the year, model and VIN before you order. The Aisin transmission parts collection lists everything else for this unit, including the AWF21 solenoid kit.

Install notes


Specifications

FitsAWF21 2008-2012
Part typePump
ConditionNew Other (See Details)
BrandOEM
ShipsFrom the USA
Warranty1-year

AWF21 Pump 2008-2012: common questions

Is the AWF21 the same as the TF-80SC?

Yes. AWF21 is another name for the Aisin AW TF-80SC six-speed. The related TF-81SC used by Ford and Mazda is a separate version, so confirm your ID plate.

Which vehicles use the AWF21?

In North America it is best known in Volvo front-drive and all-wheel-drive models such as the XC90. Send us your year, model and VIN and we will confirm fit.

What does new-other condition mean?

The pump is unused. It may not be in original packaging; see the listing details.

Could a software update fix my rough shifts instead?

On 2011-2013 Volvos with rough 5-4 or N-D shifts and code P089500, Volvo's fix is TCM software. Have that done before replacing hard parts.

What should I replace with the pump?

A front seal and pump O-ring at minimum. If the fluid is burnt, rebuild with a master kit and a new filter, and flush the cooler.


Repair guides for this job

Sources
  1. Wikipedia — AWTF-80 SC. TF-80SC also called AWF21, TF-81SC (AF21) relationship, Lepelletier gearset, lockup in all six gears, Volvo XC90 application. en.wikipedia.org/wiki/AWTF-80_SC
  2. Sonnax — TF-81SC / TF-80SC Oversized Solenoid Modulator Valve Kit. Solenoid modulator bore wear: low pressure hurts engagements and line rise boost, high pressure floods solenoids and causes harsh shifts. www.sonnax.com/parts/2151-oversized-solenoid-modulator-valve-kit
  3. Volvo Technical Journal 26840 (NHTSA copy) — Rough shifts, 5-4 downshift, Neutral Control, N-D and/or DTC P089500, TF80SC. 2011-2013 Volvo TF80SC internal tolerance deviation corrected with modified TCM software. static.nhtsa.gov/odi/tsbs/2014/SB-10055532-9962.pdf

AWF21 Pump 2008-2012

$69.98
In stock • ships from the USA • 30-day returns

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