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The Fuller Transmission Heat Exchanger Kit helps manage transmission fluid temperature during heavy hauling or extended stop-and-go driving. When fluid temperature climbs during long grades or city routes, shift feel can change and component wear may increase. This kit allows technicians to replace cooling components and restore fluid circulation through the transmission cooling circuit. During installation, the included line is routed along the original path and secured in place to maintain proper positioning. Keeping fluid temperature under control supports smooth shifting and steady transmission performance under load. The Fuller K3966 provides the necessary parts to service the transmission cooling system.
| Brand | Part Number |
|---|---|
| FJ7Z17D957EA, FULK3966 |
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