Ford F-250 F-350 Remanufactured Manual Transmission 11878T

Description

A 5.72 to 1 granny low first gear combined with 420 lb-ft torque capacity propels loaded commercial stake trucks through rugged job site mud using the Ford F-250 11878T Remanufactured Manual Transmission. This two-wheel-drive unit provides maximum low-end tractive force for demanding regional fleet service.

Featuring a die-cast heat-treated aluminum casing, this five-speed manual transmission contains carbon-lined blocker rings and case-hardened alloy countershafts. Precision-machined needle roller thrust washers locate internal gears without mainshaft end-shake. Integral clutch slave cylinder quills guide throwout bearings with zero deflection. Dual side PTO mounting ports expand vocational utility. The bare transmission weighs 172 lbs dry and takes 3.4 quarts of synthetic manual transmission lubricant.

Key Features of Ford 11878T

Technicians choose to buy Ford 11878T remanufactured transmission units to ensure uninterrupted fleet operations across challenging industrial sectors. Stringent remanufacturing standards eliminate mechanical play to deliver consistent gear engagement under severe municipal work demands.

• 420 lb-ft continuous input rating withstands full engine output without gear deflection
• 5 forward gear selections provide extreme reduction and efficient highway cruising
• 0.76 to 1 overdrive gear step drops highway engine speeds to conserve fuel
• 5.72 to 1 crawler first gear moves extreme payloads up steep commercial ramps
• Cast ductile iron shift forks withstand high-effort shifts without bend or fatigue
• Micro-finished mainshaft bearing journals preserve hydrodynamic oil films
• Dual six-bolt PTO ports permit hydraulic dump bed hoist pump integration
• Precision ground synchronizer dogs eliminate tooth burring during severe cold shifts

Drivetrain Torsional Power Thresholds

Built for Severe Commercial Fleet demands, this manual gearbox handles 420 lb-ft continuous torque. Mechanical gear reduction ratios measure 5.72 to 1 in first gear, 2.94 to 1 in second, 1.61 to 1 in third, 1.00 to 1 direct fourth gear, and 0.76 to 1 overdrive. Reverse gear provides 5.24 to 1 reduction. Natural convective casing airflow rejects 440 BTU per minute during heavy cargo transit.

Two-Wheel Drive Driveline Union

The rear extension housing features an integral slip yoke bushing supporting two-wheel-drive driveshaft balance. A 31-spline output shaft delivers high torsional yield strength with dial runout kept below 0.002 inches. The internal reverse lockout plunger prevents accidental engagement during rapid forward gear changes across rough gravel roads.

Scheduled Lubrication Inspection Standards

Inspect clutch disc release clearances and transmission crossmember insulator bushings at maintenance checks. This transmission is not engineered for quarter-mile drag runs or combined gross trailer weights exceeding factory bumper pull specifications.

• Inspect transmission casing oil level via side plug every 250 hours
• Drain transmission fluid and replace synthetic oil every 30,000 miles
• Inspect transmission mount isolators for cracking each shift

Certified Transport Crate Manifest

Protected by an extensive 3-Year / 100,000-Mile commercial fleet warranty, this unit ships inside an industrial freight container. The complete crate package includes the fully remanufactured manual transmission, replacement shift tower gasket, reverse switch terminal, and dyno quality verification record.