ME627387 6D15 6D16 SYNCHRONIZER ASSY Friction Cone 42T 2ND & 3rd Speed

ME627387 6D15 6D16 SYNCHRONIZER ASSY 42T 2ND & 3rd speed

For Eaton Fuller 6D15 / 6D16 transmission only.
Ensure 2nd & 3rd speed gear pairing matches spline count. Verify 42-tooth synchronizer ring engagement before installation. Not compatible with 4th/5th speed units or 38T assemblies.

This synchronizer assembly (ME627387) is designed for the 2nd and 3rd speed gears in Eaton Fuller 6D15 and 6D16 medium-duty transmissions. The unit features a 42-tooth (42T) engagement ring to provide smooth and timely gear shifting under load. Manufactured to OEM specifications, it replaces worn or damaged synchronizer blocks, springs, and hubs in a single assembly. Direct fit for transmission overhauls or clutch pack replacements.

OEM-grade replacement synchronizer for 6D15/6D16.
Stop gear grinding on 2nd & 3rd gear shifts. This ME627387 assembly restores factory shift feel. The 42-tooth design increases friction surface area for faster synchronization. Ideal for fleet maintenance or individual rebuilds. Plug-and-play – no shimming required.

Q1: Which transmissions is this synchronizer assembly compatible with?
A1: It is specifically designed for Eaton Fuller 6D15 and 6D16 transmissions for 2nd and 3rd speed.

Q2: How many teeth does the synchronizer ring have?
A2: The assembly has 42 teeth (42T).

Q3: Can I use this assembly for 4th or 5th speed?
A3: No. This is exclusively for 2nd and 3rd speed. Other speeds require different part numbers.

Q4: Does this come as a complete assembly or just the ring?
A4: It comes as a complete synchronizer assembly, including hub, sleeves, struts, springs, and blocker rings.

Q5: Do I need any special tools to install ME627387?
A5: Standard transmission rebuild tools are sufficient. No special adapter required, but confirm gear cone condition before installation.