Mojave Install Kit Instructions
**Verify All Components Prior to Attempting Installation**
SAE 5/8” Heater Hose ................. 8ft (6ft in kit #662)
Grommet, Rubber ....................... 2ea (Fits 1-3/8” Hole)
SAE #12 (small) Hose Clamp ..... 6ea (4ea in kit #660)
SAE #28 (large) Hose Clamp ..... 4ea (Kits #661 & 662 only)
Manual Shut-Off Valve ................. 1ea (Kits #661 & 662 only)
Adapter, “Y” 1-1/2” ...................... 1ea (Kit #661 only)
Adapter, “Y” 1-3/4” ...................... 1ea (Kit #661 only)
Adapter, “Y” 1-1/4” ....................... 2ea (Kit #662 only)
INSTALLATION INSTRUCTIONS
**Be Sure Vehicle Is Cool Before Proceeding**
Drain coolant from the vehicle.1.
Verify that there is enough spacing for the 5/8” hose to connect to the “Water-In” and “Water-Out” of the 2.
Mojave Heater and pass thru the rewall. Keep in mind that the heater hose should not bend any tighter
than a 2-1/2” radius so as not to collapse or kink and keep proper ow.
Layout the 2 holes into the rewall for the installation of the grommets. These will need to be drilled at 3.
1-3/8” for the grommet to t. Always check that both sides of the rewall are free of any obstructions and/or
moving components prior to drilling. After drilling, install the grommets.
Run the hose through the rewall and connect to the heater ports. Keep track of which one is the “Water-In” 4.
and which is the “Water-Out”. Clamp to the heater ports using 2ea of the SAE #12 hose clamps.
If required of this application, splice the “Y” adapters into the inlet and outlet hoses of the radiator. The inlet 5.
(upper hose) “Y” adapter should be installed with the 5/8” port pointed toward the front of the vehicle. The
outlet (lower hose) should also be installed with the 5/8” port pointed toward the front of the vehicle. These
should be clamped in place with the SAE #28 hose clamps.
Install the manual shut-off valve into the “Water-In” line of the heater where it can be easily accessed if 6.
possible.
Secure and tighten all hoses and hose clamps, keeping hoses away from any moving components of the 7.
engine.
Make sure the manual shut-off valve is open by turning it counter-clockwise. Rell the radiator with coolant 8.
to the proper volume of the vehicle. More coolant will be required to ll the heater and additional hose
added to the system. Fill the radiator and let the engine run and cycle the uid with the cap on. Add more
coolant as necessary. Check the vehicle again once cooled after one fully heated cycle and top-off with
additional coolant as necessary.
The Flex-a-lite Limited Warranty
Flex-a-lite Consolidated, 7009-45th St. Ct. E. Fife, WA 98424, Telephone No. 253-922-2700, warrants to the original purchasing user, that all Flex-a-lite
products to be free of defects in material and workmanship for a period of 365 days (1 year) from date of purchase. Flex-a-lite products failing within
365 days (1 year) from date of purchase may be returned to the factory through the point of purchase, transportation charges prepaid. If, on inspection,
cause of failure is determined to be defective material or workmanship and not by misuse, accidental or improper installation, Flex-a-lite will replace the
product free of charge, transportation prepaid. Flex-a-lite will not be liable for incidental, progressive or consequential damages. Some states do
not allow the exclusion or limitaion of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives
you specific legal rights and you may have other rights, which vary from state to state. The Flex-a-lite warranty is in compliance with the Magnuson-Moss
Warranty Act of 1975.
Rev. 03-06-12 99858
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