Click on image to zoom

12602548 - Ls Coolant By-Pass Tube. Steam Bleed Tube, Front Cylinder Head.

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Replaced by 12694769


This coolant pressure relief tube runs between the cylinder heads in the front of LS engines. This tube bolts directly to the cylinder heads and has a quick connect nipple that exits straight out from the left hand side of the engine above the water pump. The nipple is long enough to accept a hose and clamp instead of a factory quick connect fitting.

Tube also includes (2) 12602541 tube to head seals and (1) 12600254 tube dampner sleeve.

Application List



  • 12602548
  • 12602548
  • GM (General Motors)
  • Replaced by 12694769
  • New


Shipping Information

  • Item Requires Shipping
  • 0.2 lbs.
  • W4.7000” x H1.9000” x L11.1000”

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.

Trusted Specialists GM engine & parts specialists
Located in the USA Owned, operated, & employed
Need Assistance? Call us at 888-748-4655
Mon-Thu 8am-6pm EST
Fri 8am-5:30pm EST
Have a Question Email us and we'll get back to you within 24 hours
Pace B2B