How To Install: Mishimoto 2007-2011 Jeep Wrangler JK Transmission Cooler

Mishimoto, the world leader in performance cooling products, shows you how to install the Mishimoto Performance Transmission Cooler Kit for the 2007-2011 Jeep Wrangler JK!

the engineers at Mishimoto designed a direct fit transmission cooler kit to ensure Jeep enthusiasts will offroad or daily drive without having to worry about their transmission overheating.

Model Number: MMTC-WRA-07

2007-2011 Jeep Wrangler JK V6 Transmission Cooler Kit Installation Instructions

PARTS LIST
1PC | Mishimoto 19-row oil cooler
3PC | Mishimoto application-specific brackets
1PC | 6-ft black rubber 3/8” transmission line
2PC | 45° -10an to 3/8” barbed push-on fittings
2PC | 90° brass barbed push-on fittings
6PC | Worm-gear clamps
1PC | Mishimoto mounting hardware set

TOOLS NEEDED
10mm Wrench
1/4 Inch Drive Ratchet
Ratchet Extension
Universal Extension
10mm Socket
Flathead Screwdriver
Phillips Head Screwdriver
Pop-clip Pliers
Oil
Funnel

Disclaimer
• Please dispose of any liquids properly.
• Allow vehicle to cool completely prior to attempting installation.
• Mishimoto Performance (MP) is not responsible for any vehicle
damage or personal injury due to installation errors, misuse,
or removal of MP products.
• MP always suggests that a trained professional install all
MP products.
• Do not run the engine or drive the vehicle while overheating.
Serious damage may occur.
• Raise vehicle only on jack stands or on a vehicle lift.

INSTALLATION INSTRUCTIONS

01 | Removing the OEM Radiator

1. Disconnect the negative battery terminal.
2. Unplug the air sensor.
3. Loosen the clamp on the intake hose and remove the hose from
the engine bay.
4. Disconnect the PCV hose from the airbox.
5. Remove the airbox from the Jeep.
6. Remove the four pop clips that hold the upper radiator shroud to
the radiator.
7. Unplug the turn signals.
8. Remove the six screw-type clips from the top of the grille.
9. Remove the grille. Put a bit of pressure on the bottom of the grille
to unclip it from the Jeep.
10. Remove the four pop clips from the side radiator flaps.
11. Disconnect the wire harness from the upper radiator support.
12. Disconnect the ambient temperature sensor by removing one pop clip.

02 | Preparing the mishimoto transmission cooler for installation

1. Install the bottom brackets to the oil cooler using the supplied
Mishimoto hardware.
2. Install the L-shaped bracket to the cooler using the supplied
Mishimoto hardware.

03 | Installing the Mishimoto transmission cooler

1. Install the Mishimoto transmission cooler using five 10mm bolts
and one pop clip.
2. Relocate the ambient temperature sensor to the bottom of the
lower radiator support.
3. Cut the upper transmission cooler line.
4. Cut the provided Mishimoto transmission cooler line in half.
5. Lubricate and install the transmission cooler fittings onto the
Mishimoto lines.
6. Tighten down the clamps holding the cooler line fittings in place.
7. Feed the transmission lines into the engine bay and install the
fittings into the factory transmission cooler line.
8. Tighten down the clamps that hold the cooler line fittings to the
factory line.
9. Install the transmission cooler adapter fittings to the cooler.
10. Measure and trim the Mishimoto transmission cooler lines.
11. Tighten the metal fitting adaptors that screw onto the
transmission cooler and attach to the transmission lines.
12. Reinstall the air-intake box assembly.
13. Tighten the clamp that holds the intake tube to the throttle body.
14. Reconnect the mass-airflow sensor. Be sure to depress the red
tab, which is a safety measure to prevent the sensor from becoming
unplugged.
15. Reinstall the front grille using six screw-type clips.
16. Reinstall the turn signals.
17. Reinstall the upper radiator shroud using four pop clips.
18. Reinstall the negative battery terminal
19. Add approximately one quart of Jeep-specific transmission fluid
to the system. Remember to check the transmission fluid level
while the Jeep is running.
20. You have now successfully installed the Mishimoto Jeep
Wrangler JK Transmission Cooler. Enjoy!

[ItsaJeepWorld]

I just needed to know where you installed it. Great Video

[PaulM]

I just purchased both oil cooler and Transmission oil coil. Im very excited to install them. I just have one question. Could I use blessed silicone hose for the Transmission cooler rather than the supplied tubing as all may hoses and tubing are blue silicone and im trying to keep the uniformity.

[TheSchmed]

Which end connects to the bottom vs the top of the trans cooler radiator (input vs output) ? Or does it not make a difference ? And I would NOT use those worm clamp fittings, I would buy quality pressure/friction clamps, they ALWAYS loosen.

[PaulM]

Another question. Won't you have to add additional Transmission fluid to compensate filling up the cooler? I saw a video with a cooler being added to a Tundra and they added about 1 and a half quart of additional fluid.

[TJ_Beam]

Which hoses go to which part of the cooler? Eg, which part of the hose goes to the top and which part to the bottom? Or it doesn’t matter?

[emanuelolvera]

My transmission is running hot around 190, will these help it bring the temperature back down to a good temp?

[SM-xbpc]

Does it matter where each house goes on cooler upper or lower hose

[PhotoRam]

do newer models have a Transmission cooler already installed? my 2010 does not have one and i went in the other day at a dealer and seen thought the grill of a newer model and seamed as it had one.

[crkaiserman]

This video let some doubts: What happen with the original transmission cooler ? Did you remove for repace it. Or put this as additional ?

[cjsizemore]

What are transmission coolers used for?

[scicero]

The price is just too high, Id love to try this and see if it really is a big increase in temp but comparing a kit you can buy in an auto parts store and brackets that are simple to make I just don't see the worth and benefit to use this product. Can you really guarantee a huge difference?

[DavidsOutdoors]

what was that other cooler to the left of it?