M8SA 2011-2014 Acura TSX 2.4L FWD – Remanufactured 5-Speed Automatic Trans

Description

Heat-treated cast aluminum transaxle casing architecture absorbs severe front-wheel driveline torque shock while carbon-metallic friction discs manage 172 lb-ft continuous torque during demanding executive fleet service in the Acura M8SA Remanufactured Automatic Transmission engineered for 2011 to 2014 Acura TSX sports sedans powered by 2.4-liter K24A2 inline-four engines.

Die-cast aluminum transaxle cases house three parallel shafts that minimize mechanical flex and isolate gear harmonics. Hardened steel valve body sleeves prevent fluid cross-flow leakage, while multi-stage linear solenoids regulate hydraulic pressure during gear changes. The unit requires 7.0 quarts of Honda ATF DW-1 fluid, registers a dry weight of 172 lbs, and includes factory fluid cooler ports.

Key Features of Acura M8SA

Fleet operators buy Acura M8SA remanufactured transmission transaxles to resolve harsh downshifts and restore smooth torque converter lockup across executive transport fleets. Every transaxle passes hot fluid dynamometer validation to verify clutch fill times and line pressures.

• Upgraded torque converter clutch friction materials eliminate shudder during low-RPM cruising.
• Linear shift solenoids calibrated with micro-second accuracy deliver precise gear handoffs.
• Hard-anodized valve bore inserts halt internal fluid pressure leaks inside the casing.
• Dynamic testing confirms Acura M8SA automatic transaxle hydraulic circuit stability.
• Fine-finish helical gear teeth minimize gear whine during sustained highway operation.
• High-efficiency internal fluid filters prevent debris recirculation through sensitive shift valves.
• Heat-treated clutch reaction plates resist warping under repeated stop-and-go acceleration.

Hydraulic Line Pressure Gear Multiplication

Operating clutch pressure runs between 130 and 145 PSI, ensuring slip-free torque transfer under 172 lb-ft continuous input torque at 4,400 RPM. Sump operating temperatures hold between 165°F and 188°F under full thermal loads. Five forward gear ratios span 2.651:1 first, 1.516:1 second, 1.037:1 third, 0.738:1 fourth, and 0.566:1 fifth gear for high efficiency.

Front Axle Fitment Spline Data

Differential output carriers accept 28-spline CV axles with heavy-duty nitrile rubber seals preventing fluid seepage. Bell housing bolt geometry fits Honda K-series engine blocks with exact dowel alignment. Torque converter pilot runout measures within 0.002 inches, preventing front oil pump seal leaks and engine flexplate stress.

Automatic Shift Care Rules

Engine control computers require clean sensor inputs to orchestrate smooth hydraulic clutch release and engagement. This automatic transaxle is not engineered for road racing or vehicle weights exceeding manufacturer payload ratings. Regular maintenance preserves shift solenoid operation and friction lining durability.

• Inspect fluid level on dipstick with engine warmed every 50 hours of fleet service.
• Drain and replenish transmission fluid with genuine DW-1 fluid every 30,000 miles.
• Inspect external transmission cooler lines and connections every 12 months.

Warranty Statement Delivery Pack

Supported by a comprehensive 3-Year / 100,000-Mile commercial fleet warranty, this unit ships safely banded inside a heavy-duty freight crate. Package contents include the remanufactured transaxle unit, precision balanced torque converter, cooler line sealing washers, installation guide, and dynamometer verification test sheet.