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- USA
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
Fleece Replacement Heater Core Line Kit 89-98 Ram 5.9L Cummins 12 ValveOver time, the factory heater core tubes on your 1st and 2nd generation 5. 9L Cummins can become corroded and start leaking. Coolant leaks can create engine overheating issue that could lead to engine failure. Stop these leaks in their tracks with the Fleece Performance Heater Core Line Kit. This kit is constructed with upgraded stainless steel tubes and high temperature silicon hose. This kit contains everything you need to replace your heater lines
Over time, the factory heater core tubes on your 1st and 2nd generation 5.9L Cummins can become corroded and start leaking. Coolant leaks can create engine overheating issue that could lead to engine failure. Stop these leaks in their tracks with the Fleece Performance Heater Core Line Kit. This kit is constructed with upgraded stainless-steel tubes and high temperature silicon hose. 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.Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 1286 reviews
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Product Reviews
★★★★★ 5
Fit 2024 F250 Platinum
Size: 1.9" x 9.9" x 11.4"
Good quality, perfect fit.
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Reviewed in the United States on April 16, 2026
★★★★★ 5
Great
Size: 1.9" x 9.9" x 11.4"
Great value for the money and easy to install.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
nice quality
Size: 1.9" x 9.9" x 11.4"
I happen to be a fan of K&N air filters. Fit perfect in my vehicle. Seems like a much nicer quality filter than the cheapo filters from the parts store.
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Reviewed in the United States on March 7, 2026
★★★★★ 5
excellent product
Size: 1.9" x 9.9" x 11.4"
easy to install
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Great purchase!
Size: 1.9" x 9.9" x 11.4"
This has worked out quite well. I have had it since 2023 and have been cleaned thru about 6 maintenance schedules. It's been 2 yrs and it's in great shape. Worth every penny.
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Reviewed in the United States on December 21, 2025