CU2572-1.5, 1.5" Motor Mount Lifts, Ultra-Flex Rubber

Do I need a 1.5" or 2" MML?
Probably not.  Some abnormal circumstances in which 1.5" or 2" MMLs may be useful include extreme suspension lift, custom frames, custom engine installations, or bodies that require a particular engine position due to an out-of-the-ordinary configuration. Most typical suspension lifts (up to about 6") and other common modifications of stock vehicles do not fall in this category.  

If you are considering installing a 1.5" or 2" MML,
  Please check for enough clearance between the bell housing and floor pan.
  Also check for enough clearance between the valve cover and the hood; this can be done by putting a ball of modeling clay on the highest part of the valve cover and closing the hood (measure the resulting ball).  
  Remember, you're moving the entire engine assembly 2" upward at the radiator fan.
  Do all of the research and homework you can.  Call us, or chat with people on Jeep Forum or NAXJA.  Find people who have done it, or those who have considered it.  This is not your everyday modification.  Be sure you know what you are doing.


CU2572-1.5, 1987-1995 4.0L Jeep YJ, Ultra-Flex Rubber 1-1/2" Motor Mount Lifts (Pair)  

These were originally custom-built for Randy Wittmer who calculated these would provide the absolute most ground clearance on his 1995 YJ belly up without interference with his hood or under the tunnel. Brown Dog designed these 1-1/2" Motor Mount Lifts (MML) to reposition your engine one and a half inch higher than stock (at the cooling fan). This modification results in a slight change in the drive-line angle. Be sure to carefully calculate the geometry involved to assure clearance under the tunnel and hood. 

 

Featuring Ultra-Flex Rubber Bushings.

The Ultra-Flex Rubber bushings in this set of Brown Dog motor mounts will absorb a bit more vibration. If the bushings ever start to wear, replacements are available from Brown Dog Offroad. Prefer the sportier feel of Classic Polyurethane bushings? Think you might want to switch later? We offer all motor mounts and motor mount lifts with fully interchangeable polyurethane or rubber. If your preference changes later, you can pull these out and slide the other in. Not sure which is for you? Click here. 
 

Backed by Brown Dog Promise.
Brown Dog motor mounts will be the last set of mounts you'll need. The Brown Dog gives you his promise.

• Carefully inspect engine brackets for signs of sheared block bolts or ripped thread bosses. Or avoid the possibility of sheared engine block bolts by upgrading to the Super Engine brackets at the same time you install your new mounts.
  

• Tighten through-bolts (bolt that goes through bracket arms and motor mount) snug. Do NOT over-tighten all-metal locknuts on through-bolts.

• Bolts to pylons should be tightened like most others on your Jeep frame. Nice and tight.

• If you have any questions during installation or believe a part will not fit, do NOT alter the part. Call Brown Dog, 866 401-3877. We have extended support to assist with installation.