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🚗 Upgrade your LS engine’s cooling game—because your ride deserves the best!
The RJSPHH LS Steam Port Coolant Crossover Kit is a premium billet aluminum bypass hose kit designed for all GM LS Series engines. Featuring a rust-resistant finish, dual 1/8" NPT ports for optimized coolant flow, and versatile installation options on front or rear cylinder heads, this kit ensures enhanced engine responsiveness and durability. Lightweight at just 0.13 kg, it’s a top-rated, cost-effective upgrade trusted by LS enthusiasts.



| ASIN | B092Q7DK83 |
| Best Sellers Rank | #196,751 in Automotive ( See Top 100 in Automotive ) #9 in Automotive Replacement Bypass Hoses |
| Brand Name | RJSPHH |
| Color | Silver |
| Customer Reviews | 4.2 4.2 out of 5 stars (157) |
| Item Weight | 0.13 Kilograms |
| Manufacturer | RJSPHH |
| Material Type | Aluminum |
| Nominal Wall Thickness | 1.27 millimeters |
| UPC | 717664963328 |
| Unit Count | 1.0 Count |
S**C
Great deal
Working good so far for 4 months. Don't expect any issues.
C**N
Fits GMC Yukon SLT
Fits my 07 GMC Yukon SLT just fine, same as pictured, worth the price for my vehicle
T**E
it works but.....
Its hard to install, directions not great and it leaks a little on the passenger side of the engine.
C**F
Quality product
Fit just like oem
D**D
Worked amazing
Worked amazing
K**N
Very poor design
Don’t fit. Line hits the head bolts. Even in there picture the head bolts aren’t in the head. Very poor quality!
S**I
Quality Control Hazard
The Machining is sub par for this to fit properly. The fitting on the lines will take a vise, 14mm wrench and some elbow grease to get the fitting sung. After which bolt in. It kinks the line excessively. Do not know if it will leak as others have stated. The supplied teflon tape is almost transparent. Gave two stars as this is a part that controls engine temps and could cause problems if you are not careful. But the quality of the materials are built well. I would not recommend this product.
J**H
MUST READ
1 line worked perfectly, the other line however was very disappointing. When warmed to approximately 450 degrees in order to bend it. It snapped. This was very unfortunate due to it being 2AM and halted me in my tracks. Would buy again.
R**N
This cleans it up a lot
D**N
Comes with everything you need
D**2
They came as advertised but the rubber to head mating surface worries me. The rubber is not as thick as I feel it should be to ensure a proper seal. I guess time will tell.
W**R
Yes it met all what I needed.
S**R
This was junk couldn’t even install it. Came broken
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