Technical Bulletin
Bulletin No.: PRO-14-01 Effective Date: 1/6/78 Cancels: N/A Page: 1 of 1
Subject: NEW FMSI NUMBERS IN THE MEDIUM TRUCK
CATEGORY
The above numbers are new FMSI numbers in the medium truck category. These late
model numbers are front axle sets that fit vehicles that must comply with FMVSS 121.
To completely comply with FMVSS 121, engineering has released a new formula for
medium truck applications and this material will be known as ED-121. The above listed
numbers are on the shelf and ready to be shipped in this new ED-121 formula.
Since ED-121 is presently being used by some of the OE manufacturers, we know that
its quality and performance will meet the needs of your customers.