MM7A 2009-2010 Acura TSX 2.4L FWD – Remanufactured 5-Speed Automatic Trans

Description

Prevent forward clutch pack glazing under 172 lb-ft sustained engine output while maintaining 185°F fluid sump stability during demanding regional courier and executive transport operations using the Acura MM7A Remanufactured Automatic Transmission configured for 2009 to 2010 Acura TSX front-wheel-drive sedans running 2.4-liter K24Z3 four-cylinder engines.

Die-cast aluminum transaxle cases house three parallel shafts that eliminate planetary gear complexity and maintain mechanical rigidity. Hard-anodized valve body bore sleeves halt internal fluid bypass, while linear shift solenoids provide precise hydraulic circuit control. The unit holds 7.0 quarts of Honda ATF DW-1 at initial fill, weighs 172 lbs dry, and features integrated 3/8-inch cooler connection ports.

Key Features of Acura MM7A

Fleet operators buy Acura MM7A remanufactured transmission transaxles to cure common third-gear clutch burn and sluggish valve body response. Dyno testing under real engine load curves validates clutch clamp pressures across all shift transitions.

• Hard-anodized valve bore sleeves eliminate internal hydraulic fluid pressure loss.
• Carbon-metallic lockup clutch plates stop torque converter shudder under moderate throttle.
• Calibrated linear shift solenoids eliminate harsh garage shifts between park and drive.
• Spin load testing proves Acura MM7A automatic transaxle hydraulic integrity.
• Micro-finished planetary reaction plates distribute heat dissipation during stoplight transit.
• Reinforced countershaft roller bearings resist deflection under continuous VTEC engine torque.
• Magnetic transmission case drain plug isolates metallic wear particles from the pump inlet.

Hydraulic Pressures Shift Ratios

Main line pressure delivers 130 to 145 PSI to lock multi-disc clutch packs under full engine output. Operating sump temperatures stabilize between 165°F and 188°F via auxiliary cooler circuits rejecting 380 BTU per minute. Five forward gear steps provide 2.651:1 first, 1.516:1 second, 1.037:1 third, 0.738:1 fourth, and 0.566:1 fifth gear, managing 172 lb-ft continuous torque at 4,400 RPM.

Transverse Differential Axle Alignment

Internal differential gears interface with 28-spline front drive axles through precision-machined axle seals. Bell housing patterns fit Honda K-series engine blocks with zero clearance mismatch. Converter pilot runout measures within 0.002 inches against the flexplate hub, stopping front main pump bushing wear.

Valve Body Operation Limitations

Electronic transmission control units require proper ground wire connections to execute accurate pulse-width solenoid modulation. This transaxle is not engineered for turbo drag racing or exceeding factory gross vehicle weight ratings. Strict maintenance intervals protect hydraulic control valves.

• Check fluid level on dipstick with engine at operating temperature every 50 hours.
• Drain and refill with genuine Honda ATF DW-1 fluid every 30,000 miles.
• Inspect external fluid cooler lines for restriction or leaks every 12 months.

Warranty Statement Package Manifest

Protected by a 3-Year / 100,000-Mile commercial fleet warranty, this unit ships strapped inside an all-weather shipping container. Package contents include the remanufactured transaxle unit, precision balanced torque converter, cooler line sealing washers, installation guide, and dynamometer verification test sheet.