Sandwich Mounts For Homebuilt Aircraft

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Part# 08-03500
MFR Model# 50402-5 ASSY


Sandwich assemblies of natural rubber and specially blended synthetic compounds bonded to 2 metal plates. Normal installation requires 4 assemblies, each consisting of 2 sandwich mountings and 1 spacer. Satisfactory performance requires that the spacer be designed to the correct length to precompress each mounting to guarantee proper positioning of the mountings. Set consists of eight bonded sandwich mountings equivalent to Lord Mount No. J-7402-5 and four 4130 steel spacers with mounted rubber shoulder. Use with dynafocal engine mount rings using 2-3/4" I.D. retainer cups. Used on many homebuilts including the Defiant and Long- EZ 50402-5 w/4 spacers.

Note: Mounting hole is 7/16" and requires AN7 bolts for installation.

For experimental use only
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WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


  • Includes a set of 4
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better price and good quality.

Dan C Verified Purchase


October 12, 2021


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: We have previously purchased Lord J-7402-5 engine mount bushes for use on our production aircraft. Now that they are NON PMA we would like to use P/N 08-03500 in their place. What documentation can you provide us to assist with traceability / conformity issues? Regards Neville

These mounts are for homebuilders only (experimental). Not certified under any specifications. We can provide traceablity to the manufacturer but they hold no approval.

Q: What is the outside diameter of these mounts? Does the price buy a complete set of 4 assemblies require to mount an engine?

The O.D. is approx. 2.05", and it is a set of 4 mounts for an engine installation.

Q: Are spacers included?

Yes, the spacers are included.

Q: What bolts are required for these mounts? Thanks

This would use an AN7 bolt. Now the length will depend on the application but the diameter bolt would be a 7/16" which is an AN7.

Q: Are these also equivalent to the barry mount 94150-01 model?

Yes that is correct.

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