REBUILT GMC CHEVY C40 C50 C60 3873551 T150 T170 DIFFERENTIAL THIRD MEMBER 5.57:1

Item #:
PR-265080162240
Ships From:
Carson City, Nevada, US
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Price:
$1,499.99

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Part Number: 3873551

Fitment Type: Direct Replacement

You are looking at a completely rebuilt GM C40 C50 C60 medium duty 5.57:1 third member, complete as pictured.   It has been completely rebuilt with all new seals and high-quality Timken bearings.   You will need to install your shift lever, there are two available, one for vacuum shift and another for electric shift.

It is the fastest ratio that GM made for this axle, adding it alone will be like installing a 15% overdrive transmission.   For example typical engine rpm @ 65 mph with the most common 6.50’s is 3703, same setup with 5.57’s is 3173, or even more of an RPM reduction when starting with lower axle ratios.

There is some confusion on the T150 - T170 designation, this is the round T150 - T170 (see pictures) with a casting number of 3873551.   This will fit 1967 up to end of production.   Make sure your unit is not the oval version, if so this will not fit.

  • All the internal components were checked

  • All new bearings & races installed

  • New crush sleeve and pinion seal

  • A NOS yoke for the 1410 U joint was installed

  • No rounded teeth on either the case half, shift collar or anchor.

  • Everything was bead blasted and reassembled, it needs nothing except to be installed.

  • Two speed mounting gasket is included

  • All new bolts were used for the ring gear, two speed shift housing, shift anchor and pinion support.

  • Backlash and bearing preload are set to GM nominal standards

Shipping will be on a pallet via truck freight, must be to a CONFIRMED business address (I will check).

Feel free to contact me if you would like to see some more pictures or have any additional questions.

Warranty: No Warranty

Returns Accepted: Yes

Item must be returned within: 30 calendar days

Return shipping will be paid by: BUYER