Support Details for ALLISON FITTING , Adapts late model bell housing to early model transmission lines

SKU #: 116996LA • Purchase This Item

GM - Allison Cooler Line Fitting
EARLY 5/8" Line (short tip) to LATE Model Bellhousing (7/8" threads)

This fitting is for the early 5/8 inch line with a 7/8 inch flange. That line is mainly found
in '01, '02 and some '03 applications. The quick way to check the flange size is to
use a box end 13/16 inch wrench... if it goes over the flange; then it is NOT the
early line and this fitting will NOT work for your vehicle.

Fits: GM Allison transmissions with the Late bellhousing with 7/8 -14 inch
threads. These are found mainly in '03 -up vehicles but sometimes found
in earlier models when a replacement bellhousing was needed to replace a broken

NOTE: This fitting is only for the Late model bellhousing. 

Check Attached Chart for Correct Application

The OEM Part Number is 88996640, 89040281

NOTE: Check Attached Chart for Correct Application

Allison Fitting Chart
Application Chart

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