Gearbox Wiki

Mazda

Mazda G66M-R

From the Gearbox Wiki, the reference for people who still shift their own.

Looking for another box? See all gearboxes.

Mazda G66M-R is a manual gearbox from Mazda.

Mazda

VehicleYearsShift patternGearbox sourceMembers
Mazda MAZDA3 BL / BM
6-speed manual
[1]
Applies to: 2010 BL 2.5L Mazda3
2010, 20146 speed, reverse top leftVerified
Mazda Mazda3 BL
US, 2.5 6-speed
[2]
Applies to: BL 6-speed (pre-SKYACTIV)
20116 speed, reverse top leftCorroborated
Mazda Mazda6 GH
US 2.5L 6-speed manual
[citation needed]		20126 speed, reverse top leftLead

Research notes

Caveats and conflicts (2)
  • Forum post (mazdas247) also ties G66M-R to a 2010 Mazda3 2.5L.
  • Memory plus inference from Mazda3 2.5L. Do not publish as confirmed until a Mazda6 GH workshop manual is read.

References

  1. Service manual. Mazda3/Mazdaspeed3 workshop manual 2010-2012 section 05-15B 'MANUAL TRANSAXLE REMOVAL/INSTALLATION [G66M-R] (6MTX)'. [link]
  2. Wikipedia. Wikipedia lists G66M-R for the BL 6-speed. [link]
Categories: Gearboxes | Mazda

This page was last edited on November 11, 2026. Gearbox codes change by year, engine and market. Send a correction.

Thanks for keeping the manual alive. TMGPS members get a discount on the TMGPS collection at The Curb Shop.

Shop the TMGPS collection   Join at tmgps.org