SKU: 31595819584

Fleece Performance 89-98 Dodge 2500/3500 5.9L 12V Cummins Replacement Heater Core Line Kit

Sale price$208.77 Regular price$231.97
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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10

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Description

Fleece Performance 89-98 Dodge 2500/3500 5.9L 12V Cummins Replacement Heater Core Line KitReplace your leaking or corroded heater tubes with our upgraded stainless steel tubes and high temperature silicone hose kit from Fleece Performance. This kit contains everything you need to replace your heater lines from the block to the firewall. This kit is designed as a direct replacement for all trucks originally equipped with air conditioning. Kit includes: Stainless steel heater tube replaces Cummins 3912086 Stainless steel heater tube replaces

Replace your leaking or corroded heater tubes with our upgraded stainless steel tubes and high temperature silicone hose kit from Fleece Performance. This kit contains everything you need to replace your heater lines from the block to the firewall. This kit is designed as a direct replacement for all trucks originally equipped with air conditioning. Kit includes: Stainless steel heater tube - replaces Cummins 3912086 Stainless steel heater tube - replaces Cummins 3912087 Silicone heater hose (straight tube to block) - replaces Cummins 3931522 Silicone heater hose (90 deg tube to block) - replaces Cummins 3957649 Silicone heater hoses (45 deg tubes to firewall) Anodized billet aluminum hold down clamps, billet aluminum standoff, and mounting hardware for both stock and aftermarket manifolds Hose clamps Application Notes: This kit is intended for use with trucks originally equipped with air-conditioning. If your truck is not equipped with air conditioning, you will need to supply your own ?" ID hose to run from the firewall ports to the stainless steel heater lines. The silicone heater hose (tube to firewall) may require trimming for certain applications or to accommodate modifications made previously to the engine. If your truck is equipped with an aftermarket exhaust manifold, the rear heater line standoff will not be utilized and an additional mounting bracket is provided.

Installation Instructions
Warranty

This Part Fits:

Year Make Model Submodel
1989-1993 Dodge D250 Base
1989-1993 Dodge D350 Base
Shipping Notes
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Exchange/Return Notes
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SKU: 31595819584

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4.6 ★★★★★
Based on 26 reviews
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Verified Purchase
jared
West Palm Beach, US
★★★★★ 5
Quality Windshield Wipers
Size: 17", Style: Latitude Repellency
These wipers are a solid upgrade over standard blades. Installation is quick and straightforward, and they fit securely once attached. On the first use, you can immediately notice the difference the wipe is smooth and consistent with very little streaking. The Rain-X water-repellent feature actually works, helping water bead up and roll off the windshield for better visibility during heavier rain. They also run fairly quiet compared to cheaper blades, which is a nice bonus.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
M
Verified Purchase
michelle read
Alexandria, US
★★★★★ 5
Does what it says
Size: 22" and 22", Style: Latitude Repellency
These are my favorite wiper blades. They install easily on my Dodge Challenger and work well as wipers. But I like the little bit extra of RainX repellency to help water bead off my window in between wiper swipes.
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Reviewed in the United States on May 18, 2026
B
Verified Purchase
Becky
Birmingham, US
★★★★★ 5
Not streaky!
Size: 26" and 17", Style: Latitude Repellency
These work really well! They are not streaky, which was the biggest thing I was hoping for! They also aren’t too noisy, thankfully! They were easy to install too! I have only used them for a couple of months and so far they have continued working well!
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Reviewed in the United States on May 29, 2026
T
Verified Purchase
The Diabolical F
Draper, US
★★★★★ 4
Good wipers
Size: 22", Style: Latitude Repellency
Bought these wiper blades because my wiper blades were old. The new blades lay down a good level of water repellent on the windshield. I actually drove home this morning in a rainstorm and purposely did not turn on my wipers once, and the windshield stayed nicely beaded and cleared, a month after I put the new wipers on my truck. I recently bought my s/o a set for her vehicle. They’re expensive, but seem to be worth it. Very quiet, no chattering, 30 seconds to install on my F150.
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Reviewed in the United States on March 16, 2026
M
Verified Purchase
MARCUS C.
Phoenix, US
★★★★★ 5
Great Wiper for an Older Car!
Size: 24" and 20", Style: Water Repellency
Great Wiper, Great Fit, Great Delivery on Time and Great Reliability!
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Reviewed in the United States on May 23, 2026

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