Product Details

Oregon Performance Transmission is proud to offer this master rebuild kit for the GM 4T40E and 4T45E automatic transmission.

Year range: 1995-2010

Transmission make: Buick, Chevrolet, Daewoo, Oldsmobile, Pontiac, Saturn, GM

Transmission model: 4T40, 4T40E, MN4, 4T45, 4T45E, MN5

This master rebuild kit contains the following items:

• Transtec overhaul gasket set
• Friction clutch plates
• Fluid filter
• Low-reverse band
• Overdrive band
• Torque converter bushing

The Transtec gasket set included in this overhaul banner box kit is the highest quality available. The set includes every rubber seal, paper gasket, O-ring, sealing rings, and metal clad seals that you will need to complete your rebuild. The Transtec gasket sets are considered a premium kit, with the better Duraprene pan gasket, and higher quality gaskets and seals throughout.

Additionally, you can add the following upgrades to this overhaul rebuild kit:

• Steel clutch plates – (*pictured)
• Molded rubber, bonded clutch piston kit – Second gear, reverse, coast, direct, and forward. – (*pictured)
• Full bushing kit
• Thrust washer set
• Sonnax boost valve and sleeve - 33886-03K
• Transgo pressure regulator upgrade - 4T40E-PRT
• Superior billet aluminum accumulator piston - K069
• Drive Chain – (4T40E, 3/4", HV039), (4T45E, 7/8”, HV058), (2004-up, 5/8”, HV079) – 2004-up requires inspection of your original to verify your needed width.
• Electronics kit - A & B shift solenoids, TCC, lockup solenoid, EPC Electronic Pressure Control Solenoid, pressure switch manifold, and Input-turbine speed sensor.
• Output shaft speed sensor - Will fit all BUT Sunfire
• ATSG rebuild manual on CD-ROM
• Assembly Grease - Lubegard, Life Smart Blend, or Transjel
• Platinum Lubegard - Insider tip: Many shops use this synthetic supplement in every freshly rebuilt transmission to keep them on the road past the warranty.

This rebuild banner overhaul kit fits the following Buick, Chevrolet, Daweoo, Oldsmobile, Pontiac and Saturn applications:

Buick

• LeSabre, 2005, 4T40E

Chevrolet

• Cavalier, 1995-2005, 4T40E
• Cobalt, 2005-2010, 4T40E or 4T45E
• Malibu & Malibu Maxx, 4cyl, 1997-2010, 4T40E or 4T45E
• Malibu Hybrid, 2008-2010, 4T45E
• HHR, 2006-2009, 4T40E or 4T45E

Daewoo

• Lanos, 1994-2004, 4T40E

Oldsmobile

• Achieva, 1997-1998, no vacuum modulator, 4T40E
• Alero, 2.4L, 1999-2004, 4T40E
• Alero, 3.4L, 1999-2004, 4T45E
• Cutluss, 1997-1999, w/o modulator, 4T40E or 4T45E
• Cutluss Supreme, 1997-1999, w/o modulator, 4T40E or 4T45E

Pontiac

• G5, 2007-2010, 4T40E or 4T45E
• G6, 2.4L, 2005-2010, 4T45E
• G6, 3.5L, 2005-2010, 4T45E
• Grand Am, 2.4L, 1999-2004, 4T40E
• Grand Am, 3.4L, 1999-2005, 4T45E
• Pursuit, 2006, 4T45E
• Sunfire, 1995-2005, 4T40E

Saturn

• Aura, 2.4L, 2007-2009, 4T45E
• Aura, 3.5L, 2007-2009, 4T45E
• ION, 2003-2008, 4 Speed, 4T45E
• L-Series, 2000-2005, 4T40E or 4T45E
• VUE, 2.2L, 2002-2009, 4T45E
• VUE, 2.4L, 2002-2009, 4T45E
• VUE Hybrid, 2007-2008, 4T45E

This master kit from OPT will help ensure your GM transmission rebuild lasts. This transmission is known by the following model names and number: 4T40, 4T40E, MN4, 4T45, 4T45E, MN5.

This overhaul rebuild box kit fits the following years: 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, and 2010

Remember to soak all of your clutches in transmission fluid for thirty minutes before you install them.