LS LT Heater Core Bypass Hose Coolant Crossover for Chevrolet Pontiac LS1 LM7 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LY2 LY5 LY6 LC9 LFA LH8 LS3 L9H L20 LZ1 L99 L96 LC8 1998 and newer Replace 551699

LS LT Heater Core Bypass Hose Coolant Crossover for Chevrolet Pontiac LS1 LM7 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LY2 LY5 LY6 LC9 LFA LH8 LS3 L9H L20 LZ1 L99 L96 LC8 1998 and newer Replace 551699

$ 9.99

Score By Feature

Based on 123 ratings

Packaging

9.10

Customer service

9.28

Value for money

9.51

Satisfaction

9.62

OveReview Final Score

How Our Score Is Calculated

Product Description

By entering your model number, you can make sure that this fits.

FITS: For all GM Chevrolet Pontiac LS or LT series Gen III IV V LS LS1 LS2 LS3 LS6 LS7 LSX LH6 LH8 LH9 LT1 LT4 LY2 LY5 LY6 LQ4 LQ9 LM4 LM7 LMG LC8 LC9 L20 L33 L59 L76 L77 L92 L94 L96 L98 L99 LZ1 LR4 L

551699 IS REPLACED BY:

ENDS OF HOSE: One end is 5/8 inch, while the other is 3/4 inch.

The heater hose outlets of your LS/LT engine's water pump are used to loop the heater hoses. Remove the water pump bypass hose from the heater core. Oil, coolant, and fuel resistant finish that is easy to clean.

ENSURE: If you have any issues with the product, please contact us and we will assist you in resolving the issue.

Questions & Answers

Is this part compatible with a 2007 Chevrolet Equinox?

Almost any vehicle should be able to use it. The heater hoses on most vehicles come in two sizes: 5/8 inch and 3/4 inch. On one side, it's 5/8 inch, and on the other, it's 3/4 inch. Make sure you have a 5/8" wrench in your car. If you use a 3/4-inch hose, you'll be fine.

Is this going to fit in a Ford Ranger XLT 3? 0 2000. ?

Looking it up on the Rock Auto website, it does not appear to be the case.

Is it compatible with the S1o V6?

Check your hoses to make sure you have a 5/8 inch hose. Hoses for heaters that are 3/4 inch in diameter. If that's the case, you're in good shape.

Selected User Reviews For LS LT Heater Core Bypass Hose Coolant Crossover for Chevrolet Pontiac LS1 LM7 LQ4 LS6 L59 LQ9 LM4 L33 LS2 LH6 L92 L76 LY2 LY5 LY6 LC9 LFA LH8 LS3 L9H L20 LZ1 L99 L96 LC8 1998 and newer Replace 551699

Works

5/5

By removing the heater core from my Camaro, less warm air leaks around the control door, and the air conditioning is much colder. I connected the valves with a T so that they can easily be opened for heat in the event of a power outage.

Yosef Hobbs

| Feb 10, 2021

Exactly as described

5/5

Heater Core was used during the ls swap, but it is no longer installed. This was required to avoid the use of factory coolant hoses when connecting the heater core.