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Speed Stop Auto Repair / Masonbilt Diesel Performance Duramax 5/8 Transmission Cooler Line Kit 01-16 GM

Speed Stop Auto Repair / Masonbilt Diesel Performance Duramax 5/8 Transmission Cooler Line Kit 01-16 GM

SSLINEKIT-1

$290.00 USD
$290.00 USD
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🔔 Important Notice: This product may be temporarily out of stock. Orders are still accepted, but please note that additional processing time may be required before shipping. Estimated lead time may vary depending on supplier availability. If you need the item urgently, please contact us to confirm current availability.

Do you have leaky transmission lines? This is the last set of transmission lines you'll ever need. 

In a joint venture between Speed Stop Auto Repair and Masonbilt Diesel Performance, we have developed the most durable, serviceable, and the ONLY DOT-approved transmission line set with a LIFETIME warranty. All of these lines are made by hand, in-house, with equipment we own, meaning that we have complete control over quality and know that each line is being made to our exact specifications. 

Includes:

-Complete 3-piece replacement line set and all necessary fittings for the truck side, zip ties, and an extra O-ring.

-Instructions

-Lifetime Warranty 

-Real customer service you can call or text!

Features:

-5/8" flame and abrasion-resistant hose rated for 4000psi- SIGNIFICANTLY more than both OEM and built transmissions require

-Stainless JIC ORB fittings- no aluminum to corrode or crack

-Our own specific line lengths and fittings tailored specifically to each truck

Fitment notes: Please see pictures if you have additional questions:

-If you have an aftermarket radiator, you will need M22 fittings instead of OE-style to JIC. This can be easily determined if your radiator has a hex-shaped fitting BEHIND the OE-style transmission cooler fittings.

2001-2002 Allison transmission cooler inlet/outlet fittings had a smaller 3/4" thread diameter than later 7/8" units. If you think your transmission has been swapped with a later unit, you can measure the original trans cooler fitting in the transmission or reference the build plate found on the passenger-side of the transmission. If you need help identifying your fittings please contact us!

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📌 Before You Complete Your Purchase Please review the important information below regarding product accuracy, pricing, inventory, and return policies.

  • Terms & Conditions (TOS)

    Product Information Accuracy Disclaimer:

    "While we strive for accuracy, FrankBuilt Performance does not warrant that product descriptions, prices, or other content is error-free. In the event of an error, we reserve the right to cancel or correct any order placed for the incorrectly listed item."

    Price Changes:

    "Prices are subject to change without notice. Errors in pricing may occur and we reserve the right to refuse or cancel orders placed at incorrect prices."

    Inventory Disclaimer:

    "Inventory availability is not guaranteed. If an item becomes unavailable after an order is placed, we will contact you as soon as possible to offer alternatives or a full refund."

  • Shipping & Returns Policy

    Wrong Parts Received / Ordered:

    "It is the customer’s responsibility to verify product fitment before placing an order. If you receive the wrong item due to an error in our listing, we will work to resolve the issue. If the wrong item is ordered by mistake, restocking fees may apply."

    Restocking Fees and Return Eligibility:

    "Returns may be subject to a restocking fee. Items must be unused and in original packaging."
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