Startseite » GM LS Engine Heater Core Bypass Hose With Silicone And Stainless Steel

GM LS Engine Heater Core Bypass Hose With Silicone And Stainless Steel

SKU: 1005006141903956-Default Title
Default Title
€15,31
-38% €24,50 €15,31

Upgrade and simplify your GM LS/LT cooling system with the GM LS Engine Heater Core Bypass Hose, crafted from premium silicone and stainless steel. Designed for 98-up Gen 3–5 LS engines, it safely loops the heater supply and return ports (5/8" and 3/4") at the water pump, enabling a reliable bypass when the heater core is removed or not required. This smart bypass helps reduce weight, lowers potential leak paths, and minimizes the risk of coolant overheating by keeping the circuit flowing smoothly.

Built for high-temperature service, this bypass hose combines the flexibility of silicone with the strength of stainless steel to withstand under-hood heat and coolant exposure. It’s 100% quality assurance tested, offering a more responsive, cost-effective solution that’s easier to install than OEM reroutes. The hose is compatible with 98-up LS/LT Gen 3–5 engines and is color-listed as shown in the picture.

Benefits & Tips

  • Eliminates heater core-related leak risks and simplifies the cooling circuit for performance builds or winterized vehicles.
  • Lightens the vehicle’s curb weight by safely removing the heater core while maintaining proper coolant flow to the engine.
  • Practical guidance: verify your engine has 5/8" and 3/4" heater ports, use the included clamps for a secure installation, and seek professional installation if you’re not experienced with cooling-system work.

Product specifications

  • Brand Name: PQY
  • Choice: yes
  • Material: Silicone and Stainless Steel
  • Model Number: V8 Small Block
  • OEM NO.: V8 Small Block
  • Origin: Mainland China
  • Application: For 98-up LS LT GEN 3 4 5 Engine with 5/8" and 3/4" heater supply and return ports
  • Color: as picture
  • Includes: 1x Hose; 2x Clamp
  • Notes: 100% quality assurance tested; loops heater ports on the LS/LT water pump; designed to reduce weight and prevent coolant leaks

Package includes:

  • 1x Hose
  • 2x Clamp

Warnings / Reminders

  • Provide Tracking Number With Every Order — Please Buy With Confidence!
  • No installation guides are included; we highly recommend seeking professional installation.
  • Any damage during installation will not be refunded.
  • Will come with everything you see in the picture. Please allow differences due to manual measurement and screen color variations.

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