Flex-A-Lite Mojave Heater - 640 | 4WD.com

Flex-A-Lite Mojave Heater - 640

universal fit logo


  • Flex-A-Lite | Part Number: FLX640
  • Fitment:Universal Fit
  • Type:Hot Water


Don't be cold this winter! Add this universal heater to your older CJ or just enhance the heater in your newer Jeep. The optional heater plenum will allow you to direct the heat and add defrosters to your ride. 12,000 BTU output - 140 CFM airflow. Multiple speed motor - quite operation. Easy installation with multiple mounting options. Includes switch plate and wiring harness. Heater Dimensions: 10.12" x 9" x 5". Heater plenum is sold separately, part #650.


Question & Answers

2 Answered questions

To install this heater, do you buy extended heater hoses (intake & exit) and tie them into the existing heater hoses coming from the engine and run them to the Mojave Heater? I want the front heater to work, too. I have a 1982 Jeep CJ5. Thanks, Roger Cox

Asked by Sogg from Waterford, MI on

Hi Sogg, This Flex-A-Lite Mojave Heater does in fact tap into the Jeep's heater hoses with extended hoses for intake and outwards, great question and thanks for your inquiry.

Answered by Jim G Ext 4806 from Waterford, MI on

1998 Wrangler... country of origin for this heater?

Asked by Steve Fogg from Homer, Alaska on

Hi Steve The Mojave Heater is made in the USA. Thanks

Answered by LWiff from Homer, Alaska on


Fife, Washington-headquartered Flex-a-lite has specialized in performance cooling products for over 50 years. The company's innovative "flex fan" concept reduces drag on engines and increases horsepower to the wheels. Performance components include radiators, electric and belt-driven fans and oil and fuel coolers, and Flex-a-lite's team of engineers is dedicated to innovation and thorough product testing. "Still Makin' It in the USA" is their motto and Flex-a-lite products have a reputation for being durable, fuel efficient and easy to install. We carry a variety of parts and accessories for Jeeps ranging from radiators to cooling fans to fan blades and off-roaders count on their proven track record for improving overall engine performance. Shop Flex-A-Lite Now