5HP19FL 1997-1999 Audi A8 3.7L FWD – Remanufactured 5-Speed Automatic Trans

Description

Engineered for full-size luxury flagships, this Audi A8 1997-1999 Remanufactured Transmission provides quiet operation and effortless torque management. The 5-Speed FWD transaxle easily manages 230 horsepower and 235 lb-ft of torque up to a 6,500 RPM ceiling. Operating hydraulic line pressure peaks at 220 PSI, preventing clutch slippage during brisk passing maneuvers.

High-integrity die-cast aluminum transaxle casing encases carburized 8620 steel helical gear clusters and an integrated front differential. Segmented graphite friction plates pair with heat-treated steel reaction plates to withstand high thermal loads. The rebuilt valve body incorporates wear-resistant bore sleeves and an oversized pressure regulator spool. The transaxle dry weight totals 222 lbs, with a 10.2-quart fluid sump capacity and 1/2-inch cooler line connections.

Key Features of Audi A8

Automotive repair professionals buy Audi A8 1997-1999 remanufactured transmission inventory to eliminate torque converter shudder and solve erratic gear hunting in premium sedans. Each transaxle is built using upgraded internal wear components to deliver long service life under highway conditions.

• 27-spline heat-treated input shaft absorbs engine torque surges without metal fatigue.
• A8 1997-1999 replacement valve body ends delayed gear engagement and pressure bleeding.
• 5-Speed gear set provides prompt launch acceleration and low-rpm highway cruising efficiency.
• Integrated front differential gear set handles open-road touring with zero mechanical noise.
• 1997-1999 A8 gear train module features micro-polished gear teeth to reduce friction loss.
• Reinforced direct clutch drums prevent distortion under high hydraulic clamping pressures.
• Precision-calibrated electronic shift solenoids ensure seamless ratio transitions in all weather.

Hydraulic Flow Temperature Limits

Internal line pressure regulates between 185 and 220 PSI via electronic pressure control solenoids. Fluid sump temperature stabilizes between 165°F and 192°F under continuous grand touring speeds. Forward ratios start with a 3.67:1 1st gear, transition through direct 1.00:1 4th gear, and finish at 0.74:1 5th gear overdrive. Forced oil circulation through external cooling channels preserves fluid lubricity.

Axle Flange Driveline Alignment

The transaxle features precision-balanced 108mm front drive axle flanges designed for factory half-shafts. Dial indicator testing confirms axle flange runout remains under 0.0014 inches to prevent vibration and seal wear. The transmission subframe mount location sits 20.2 inches behind the bell housing face. Concentric dowel pins position the transaxle square to the engine block face.

Automated Dyno Load Verification

Each remanufactured transaxle runs on an automated load dynamometer with hot synthetic fluid to test gear holding capacity and solenoid response times. This unit is not engineered for track day racing, forced-induction engine swaps, or cars running un-flushed transmission fluid coolers.

• Inspect fluid level through the inspection port every 30 operating days.
• Drain pan, clean magnets, and replace filter every 30,000 miles.
• Inspect drive axle boots and output seals every 12 months.
• Check electrical transmission harness plug for fluid every 60 days.

Crate Shipment Warranty Terms

Commercial buyers receive an ironclad 3-Year unlimited mileage warranty protecting every unit. The reinforced transport crate contains the complete remanufactured 5-Speed FWD transaxle, balanced torque converter, magnetic drain plug, and synthetic fluid fill instructions.