2017-2019 L5P Duramax Transmission Cooler Line Set Fleece Performance

Stronger, higher-flow trans cooler lines

Fleece's kit replaces the factory transmission cooler lines on the 2017-2019 L5P with 5/8 in. ID hose, larger than stock, plus a heavy-duty polyester wrap for protection.

AN fittings, washers, clamps and cable ties are included for a complete install.

Who it's for

Owners of 2017-2019 Chevrolet Silverado / GMC Sierra 2500/3500 L5P Duramax trucks with leaking or worn cooler lines.

Key specs (per Fleece)

What's included

• 5/8 in. ID transmission lines with AN fittings (3)
• 7/8-14 O-ring to -10AN fittings (6)
• Large OD washers (2)
• Hose clamps (double), locking cable ties and fir-tree style clamps

Fitment notes

• Fits 2017-2019 Chevrolet Silverado / GMC Sierra 2500/3500 with the L5P Duramax (per Fleece).
• Not for cab and chassis trucks.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.