6HP26 2007-2009 Jaguar XK 4.2L RWD – Remanufactured 6-Speed Automatic Trans

Description

Prevent friction plate burnout under 315 lb-ft continuous torque transfers while sustaining 180°F sump stability in demanding high-mileage corporate executive touring vehicle operations using the Jaguar XK 6HP26 Automatic Transmission calibrated for 2007 to 2009 Jaguar XK 4.2-liter naturally aspirated rear-wheel-drive platforms. This unit restores rapid gear shifts and resolves mechatronic valve bore degradation.

The casing utilizes high-density die-cast aluminum to isolate internal gear sets from torsional chassis flex during hard vehicle acceleration. Hard-anodized Sonnax sleeves restore worn hydraulic bores in the mechatronic valve body to stop fluid bypass across shift channels. Installation specifications include quick-disconnect cooler ports, an 11.25-inch torque converter bolt circle, and an unladen dry weight of 185 lbs. Sump capacity holds 10.0 quarts of high-grade synthetic automatic transmission fluid.

Key Features of Jaguar XK 6HP26

Fleet maintenance managers buy Jaguar XK 6HP26 automatic transmission packages to eliminate driveline harshness and maintain uninterrupted commercial vehicle uptime. Each remanufactured unit undergoes comprehensive dynamometer testing under loaded road simulations to verify precise hydraulic circuit execution.

• 260 PSI main line pressure calibration maintains firm clutch pack clamp force under high engine torque.
• 6 computer-controlled forward gear ratios optimize torque distribution across all engine operating ranges.
• 6 heavy-duty carbon-metallic friction plates per pack halt clutch slippage under sustained highway driving.
• 0.0015-inch gear tooth runout tolerances on planetary gear sets minimize gear whine inside the vehicle cabin.
• 185 lbs bare casing weight matches original equipment floorpan mounts without requiring chassis modifications.
• High-speed pulse-width modulated solenoids respond within 40 milliseconds to execute instantaneous gear transitions.
• Dynamically balanced remanufactured torque converter dampens V8 rotational harmonics across all engine speeds.

Naturally Aspirated Torque Ratings

Main pump line pressure regulates between 230 and 295 PSI to lock friction clutches without slippage during full throttle acceleration. The internal gearset utilizes a 4.17:1 first gear ratio for confident vehicle takeoff, stepping down through intermediate gears to a 0.69:1 highway overdrive. Continuous input torque capacity peaks at 440 lb-ft at 3,600 RPM under severe commercial fleet operation. Auxiliary cooler circuits dissipate 480 BTU per minute of heat energy, holding fluid sump temperatures between 160°F and 190°F.

Output Driveshaft Flange Alignment

The transmission output shaft connects to the driveline through a 3-bolt companion flange engineered for rubber flex discs. Output flange dial indicator runout measures less than 0.0012 inches total indicator reading to stop center bearing vibration. An internal mechanical parking pawl mechanism holds up to 1,400 lb-ft of static driveline reverse torque on steep ramps.

Mechatronic Calibration Service Schedule

Technicians must execute transmission control module electronic adaptation drive cycles after installation to calibrate pulse-width modulated solenoids to factory shift timings. Magnetic fluid pan inspection maintains long-term transmission fluid purity during high-mileage fleet operations. This remanufactured drivetrain is not engineered for track drag racing, extreme rock crawling, or gross combined vehicle weights exceeding factory chassis tow limits.

• Verify transmission fluid level through the side inspection port each shift during initial fleet break-in.
• Flush auxiliary oil cooler lines and replace pan filter media every 30,000 miles of operation.
• Inspect cooler port fittings and external rubber mounting bushings every 12 months for physical wear.

Grand Touring Warranty Manifest

Each unit includes a 3-Year / 100,000-Mile commercial fleet warranty covering internal mechanical components against defect. The heavy-duty crated package contains one remanufactured transmission unit, a precision balanced torque converter, replacement cooler line seal washers, an installation instruction guide, and a signed dynamometer inspection sheet.