Mazda M5OD transmission

The M5OD (Manual 5-speed with Over Drive) is a line of manual transmissions produced by Mazda and used in Mazda and Ford cars and trucks. Two variants, light-duty R1 and medium duty R2, are made. R1 transmissions have been used in the Ford Ranger, Explorer, Aerostar, and Bronco II. R2 versions have been used in the F-150, Econoline Van, full size Bronco, and the Cougar/Thunderbird with the supercharged V6.

The M5OD is fully synchronized on all gears, including reverse. The synchronized reverse gear was one of the main features of the new units, to protect internal components from being damaged by inadvertent operation by the customer, and was protected by US Patent 4,757,726.^[1] The transmission has an integral bellhousing, making the power plant stiffness high enough to avoid harmful resonance. The transmission uses a hydraulic clutch setup and has an internal slave cylinder.

Applications:

M5OD-R1

• 1988-present Ford Ranger
• 1988-1990 Ford Bronco II
• 1988-1995 Ford Aerostar
• 1991-2000 Ford Explorer

M5OD-R1HD

• 1997-2002 Ford Explorer (4.0 L SOHC V-6 engine)
• 2001-present Ford Ranger (4.0 L SOHC V6 engine)

M5OD-R2

• 1988-1996 Ford F-150 (4.9 L {300 ci} inline-6 engine and 5.0L 302 ci)
• 1988-1996 Bronco (4.9 L {300 ci} inline-6 and 5.0 L {302 ci} V8 engine)
• 1989-1995 Ford Thunderbird Super Coupe (3.8 L OHV V6 Supercharged engine)
• 1989-1990 Mercury Cougar XR-7 (3.8 L OHV V6 Supercharged engine)
• 1997-2008 Ford F-150 4.2 L V-6 & 4.6 L V-8 engine
• 2006-present Ford Ranger/Mazda BT-50 (2.5/3.0 L inline-4 Commonrail turbocharged Diesel engine)
• 2007-present Ford Everest (2.5/3.0 L inline-4 Commonrail turbocharged Diesel engine)

Notes

1. ^ Yamaguchi; Touhei, Moriyama, Kazuhiko, Shirai, Ethuo (19 July 1988). "United States Patent: 4757726" (in English). Mazda Motor Corporation. United States Patent and Trademark Office. http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=4757726.PN.&OS=PN/4757726&RS=PN/4757726. Retrieved 13 July 2010.