Home 170° Thermostats Application Guide Why A Low Temp Thermostat? 170° vs 180° or 160° 4.6L DOHC Refill/Burp Procedure Where To Buy Contact Us & About Us
Welcome to Reische Performance Products! We are committed to producing the absolute best low temperature thermostats currently available for your Shelby GT500, GT350, Raptor, Mustang GT, Boss 302, Cobra, Bullitt, Lightning and EcoBoost F150. We manufacture thermostats for almost any Ford high performance application as well as build custom thermostats to your specifications.
Lethal Performance Wins 5.0 Mustang Magazine's 2013 King Of The Street Competition!
Our Ford-G5 Performance Thermostat was among some of the first mods to be done to Lethal's 1236hp Shelby GT500.

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170° PERFORMANCE THERMOSTATS
Home 170° Thermostats Application Guide Why A Low Temp Thermostat? 170° vs 180° or 160° 4.6L DOHC Refill/Burp Procedure Where To Buy Contact Us & About Us
Many of the low temp thermostats available from our competitors use an improperly fitting bypass valve and will be unable to control the bypass flow- allowing hot coolant to recirculate back into the engine at all times, reducing the efficiency of your cooling system. Our 170° Performance Thermostats are made with the same size diaphragm and bypass control as your OEM unit. Each is designed specifically to fit your application and made with 100% U.S. components. These thermostats will provide the best possible heat dissipation from your system along with a faster warm up time and better cold weather performance than a 160° unit. We believe the 170° opening temp is the ideal balance for high performance engines, providing high flow to your radiator by mid-180 temps along with good all season performance, giving those running high levels of timing and/or boost added protection against engine-damaging detonation as well as maximum hp.
We believe these are the best available and back them with a 5 YEAR WARRANTY.
FORD-50 170° Performance Thermostat
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3.5/3.7/5.0/5.2L DOHC/EcoBoost(RWD only), 2.7/3.0L EcoBoost: fits 2011-2017 Mustang & F150. Includes a new OEM O-ring.
FORD-4D 170° Performance Thermostat
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4.6L DOHC (32V), transverse 3.5L EcoBoost, transverse 3.0/3.5/3.7L DOHC: fits Taurus SHO, Cobra, Mach 1 & more. Includes a new OEM O-ring.
FORD-G5 170° Performance Thermostat
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5.4/5.8L DOHC: fits 2007-2014 Shelby GT500 Mustang only. Includes a new OEM O-ring.
FORD-4S 170° Performance Thermostat
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4.6/5.4/6.2/6.8L SOHC: fits Mustang, F150, Crown Vic & more. Includes a new OEM O-ring.
NB-54 170° Performance Thermostat
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Small block Chevy, big block Chevy, small block Ford, Chrysler, Pontiac, Buick & many other applications. 2.125 inch diameter non-bypass.
Purchases will be made through LethalPerformance.com Purchases will be made through Steeda.ca

5 YEAR WARRANTY

ALL REISCHE PERFORMANCE THERMOSTATS ARE GUARANTEED AND WILL BE REPLACED FREE OF CHARGE IF A FAILURE OCCURS WITHIN FIVE YEARS OF YOUR ORIGINAL PURCHASE!

Here you see the OEM thermostat from an ’03 Cobra (left) next to our FORD-4D t-stat (right) and how they respond to the same temperature water. MORE 170° vs 180°...

MORE WAYS TO IMPROVE YOUR COOLING SYSTEM!
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