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4T60E Sprag Clutch

$82.58
In stock • ships from the USA

4T60E Sprag Clutch, new and ready to install. Fits the 4T60E. 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

If your older GM front-drive car with a 440-T4 or 4T60E pulls through first and second, then flares or feels like it drops into neutral in third, the third clutch sprag is a prime suspect. This is a new third clutch sprag for the THM 440-T4 (4T60) and 4T60E, industry number 84724C, cross-referenced to GM OE number 24204036. It is a back-to-back design sprag, sold as the bare one-way element, so it suits a rebuilder who is overhauling the input housing and reusing good races.

What the 3rd clutch sprag does in a 4T60E

A sprag is a ring of small tilted wedges between an inner and outer race. Turn one race in the drive direction and the wedges stand up and lock; turn it the other way and they lay down and freewheel. In the 4T60E and 440-T4 the third clutch drives through this sprag in third gear. On the 3-4 upshift the fourth clutch applies and the sprag simply overruns, so the shift needs no precise release timing. The same freewheel action means that if the sprag wears or rolls over, the third clutch can be fully applied and still deliver no torque.

Transmission Digest points out that third clutch slip in these transaxles shows only in third, while second clutch slip spreads across several gears. That pattern is the quickest way to separate a sprag or third clutch fault from a second clutch fault.

Symptoms of a worn 4T60E 3rd clutch sprag

How to confirm it before you order

First confirm correct fluid level and condition, and scan for codes. Pressure problems can mimic clutch slip, so rule out a sticking pressure control solenoid with our EPC solenoid diagnosis guide; the 4T60E and 4T65E share much of this hydraulic logic. Our common problems guide covers the gear-by-gear slip pattern. With the input housing on the bench, hold the third clutch hub and rotate: the sprag must lock firmly one way and turn smoothly the other. Check the races for pitting or brinelling, since a new sprag on a damaged race fails fast.

Fitment

This sprag is listed for the THM 440-T4 (4T60) and the electronic 4T60E third clutch, OE 24204036, industry 84724C. The 4T60E ran through many GM front-drive cars in the 1990s, and parts changed over its life, so compare the old sprag's element count, width and cage style with this one, or match the 24204036 number, before you install. It is not the 4T65E input or third assembly; the later 4T65E sprags and the 2003-up pawl design are different parts. If you are not sure which unit you have, send us the year and VIN. More parts for this family are in the 4T60E and 4T65E collection.

Install notes


Specifications

Fits4T60E
Part typeSprag Clutch
ConditionNew
BrandOEM
ReferenceTH440
ShipsFrom the USA
Warranty1-year

Complete the job: parts that go with this

Doing this repair right usually means replacing these at the same time. Same transmission, ships together.

4T65E Input Drum 1995
4T65E Input Drum 1995
$69.99

4T60E Sprag Clutch: common questions

Which transmissions does this sprag fit?

It is listed for the THM 440-T4 (4T60) and 4T60E third clutch, industry number 84724C, OE 24204036. Match your old sprag or the OE number before installing.

Is this a complete one-way clutch with races?

No. It is the sprag element itself, a back-to-back design. Reuse your inner and outer races only if they are free of pitting and flat spots.

Does it fit a 4T65E?

No. The 4T65E uses its own input and third sprag assemblies, and from 2003 a pawl-type design. Look at our 4T65E one-way clutch listings instead.

How do I know it is the sprag and not the third clutch plates?

Both cause slip only in third. With the housing apart, a sprag that freewheels both ways or feels rough is bad; burnt third clutch plates with a good sprag point to the clutch pack or its seals.

What fluid should I use?

Dexron VI. GM's Dexron VI service-fill spec is designed to back-service older Dexron III applications like the 4T60E.


Repair guides for this job

Sources
  1. Transmission Digest — The 4T65-E: Slip-Sliding Away (Wayne Colonna, ATSG). 4T60 (440-T4) clutch failure patterns; third clutch slip seen only in third, second clutch slip across several gears. www.transmissiondigest.com/the-4t65-e-slip-sliding-away/
  2. Sonnax — Stop 4T60-E, 4T65-E Case Wear, Band Slippage and Breakage With a Longer Servo Pin. Shared 4T60-E/4T65-E hard-part wear and pressure control contribution to slip. www.sonnax.com/tech_resources/612-stop-4t60-e-4t65-e-case-wear-band-slippage-breakage-with-a-longer-servo-pin
  3. SAE International — General Motors DEXRON-VI Global Service-Fill Specification (2006-01-3242). Dexron VI back-serviceable into Dexron III applications. saemobilus.sae.org/papers/general-motors-dexron-vi-global-service-fill-specification-2006-01-3242

4T60E Sprag Clutch

$82.58
In stock • ships from the USA • 30-day returns

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