Welcome to Reische Performance Products! We are committed to providing the absolute best performing thermostats currently available for your Shelby GT500, Raptor, Mustang GT, Boss 302, Cobra, Mach 1, Bullitt and Lightning. Also be sure to check out these other unique products offered by our alliance of partner vendors:

for all Ford Modular V8s
Simply the best thermostat available for your
Cobra, Shelby GT500, Mach 1, Bullitt, Mustang GT,
Boss 302, Raptor, F150 or Lightning!
for all late model
high performance applications
Innovative air/fuel charge cooling solutions
Use your factory A/C system to make more horsepower!
for late model
Mustang, Camaro/Firebird and GTO
Quality shifter gasket sets for a quieter shifter!
for late model
Cobra and Lightning
Seamless, clear overlay installs over your stock boost gauge.
Read higher boost levels without an aftermarket gauge!
Start 'n Charge Performance Alternators
Jamie McClinton - Owner
for late model Mustang and Lightning
Assembled with the absolute highest quality U.S.
made components currently available!
$250-$300 depending upon app. and amperage
Call (509) 447-0289 to order.
Dedicated to raising autism awareness
Reische Performance Products is a sponsor of Racing For Autism
Please go to racing4autism.ca to learn more about the
racing team and how you can get involved.

Congrats to Jake Conant with the first Eaton powered Terminator in the 9s (Stock engine, No N2O)!!! Blower ported by Posi Performance - Full mods list here


170° PERFORMANCE THERMOSTATS for FORD Modular V8 & Duratec/EcoBoost V6
Many have searched the internet and part stores for a properly fitting low temp thermostat for their late model GT500, Cobra, Mach 1, Bullitt, Mustang GT and Boss 302. Beware of aftermarket companies who sell the same thermostat for all Ford modular engines. Those units are designed for the 2V SOHC engine and, if installed in the improper housing, will be unable to shut off the bypass- allowing hot coolant to recirculate back into the engine at all times, reducing the efficiency of your cooling system.

Our FORD-4D (right) & other Ford DOHC thermostats are custom made with the same size diaphragm and bypass control as the OEM units. Each of our thermostats is modified by hand using only U.S. made parts and then quality inspected to ensure consistent opening temps. These t-stats are the only ones specifically designed to fit these applications making them the best performing low temp units on the market!

FORD-4D 170° Performance Thermostat Application Guide
$63.00 Shipped
For primarily 4.6L DOHC & V6 DOHC: fits 1996-2004 Cobra, Mach 1 and Mercury Marauder; 2005-2006 Mustang GT; plus other Ford 4.6L DOHC (32V) and 3.0/3.5L DOHC (24V) apps like the 2010-2013 Taurus SHO. Includes new O-ring gasket. Performance Info 4.6L DOHC REFILL/BURP Procedure
FORD-4S 170° Performance Thermostat Application Guide
$37.00 Shipped
For 4.6/5.4/6.2L SOHC: fits 2010-2013 Raptor, 2007-2010 Mustang GT & 1996-2004 Mustang GT, 1999-2004 Lightning & Harley Davidson F150 plus most other Ford 4.6L & 5.4L SOHC apps like the 1992-2011 Crown Victoria and 1997-2011 E/F-Series. Includes new O-ring gasket. DATA/NOTES
FORD-G5 170° Performance Thermostat Application Guide
$60.00 Shipped
For 5.4/5.8L DOHC: fits 2007-2013 Shelby GT500 Mustang only. Includes new O-ring gasket. DATA/NOTES
FORD-50 170° Performance Thermostat Application Guide
$65.00 Shipped
For 3.7/5.0L DOHC: fits 2011-2013 Mustang plus 2011-2013 F150 3.5L EcoBoost & 3.7/5.0L trucks. Includes new gasket. DATA/NOTES
CONTACT US

661-414-2116 or email ReischePerf@live.com for free technical or application assistance.

Purchases will be made through LethalPerformance.com Voted 'BEST ONLINE PERFORMANCE SHOP' by the members of SVTPerformance.com!

Whether you are using an aftermarket radiator or not these thermostats will provide the best possible coolant temps and heat dissipation from your setup along with reduced warm up times and better cold weather performance when compared to a t-stat with holes drilled in the diaphragm. We believe the 170° opening temp is the ideal balance for high performance engines, providing high flow to your radiator by mid-180 temps while still maintaining a good level of all season performance. With proper fan settings your cruising temps in cool weather will be in the 170s and in hot weather the 180s, giving those running high levels of timing and/or boost added protection against engine damaging detonation as well as maximum power output.

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...

WHY USE 170° vs 180° or 160°?

ALL THERMOSTATS ARE GUARANTEED AND WILL BE REPLACED FREE OF CHARGE IF A FAILURE OCCURS WITHIN ONE YEAR OF YOUR PURCHASE!