Subaru FB20B 2.0L H4 Remanufactured Engine – 2012-2013

Description

A 10.5:1 compression ratio matched with 55 PSI cruising oil pressure outputs 148 continuous brake horsepower to support demanding municipal fleet service rounds without mechanical hesitation via the Subaru FB20B 2.0L Remanufactured Engine. Calibrated for 2012 to 2013 Impreza and XV Crosstrek platforms, this 16-valve DOHC chain-driven Boxer-four powerplant provides proven operational economy across rigorous vocational schedules.

High-pressure die-cast aluminum block architecture contains centrifugally cast iron dry sleeves honed to an Ra 25 micro-inch deck surface finish. A precision-balanced forged steel crankshaft rotates within line-honed main bearing saddles, driving asymmetrical forged steel connecting rods and hypereutectic pistons with anti-friction skirt coatings. Sump capacity measures 5.3 quarts in a stamped steel oil pan, while high-velocity oil passages protect dual overhead camshafts across an overall dry engine mass of 275 lbs.

Key Features of Subaru FB20B

Fleet supervisors buy Subaru FB20B remanufactured engine packages to maximize vehicle utilization rates and minimize fuel expenditure. Automated dyno cell testing ensures exact dual active valve control operation and balanced combustion compressions under load.

• Dual active valve control system continuously regulates intake and exhaust camshafts for broad-band torque
• Maintenance-free silent timing chain system eliminates timing belt service intervals
• Multi-layer steel cylinder head gaskets maintain combustion seals against continuous thermal cycles
• Plateau diamond honed cylinder bores eliminate piston ring blow-by and oil vapor emissions
• High-flow internal trochoid oil pump provides 55 PSI cruising lubrication to protected bearings
• Top-mount oil filter housing permits rapid lubricant service during fleet inspections
• Subaru FB20B long block units pass rigid non-destructive ultrasonic flaw testing

Combustion Energy Thermal Thresholds

This horizontal-four engine outputs 148 horsepower at 6200 RPM alongside 145 lb-ft continuous torque at 4200 RPM using a 10.5:1 compression ratio. Dynamic cylinder cranking compression tests between 175 and 185 PSI across all four cylinders. Normal coolant operating temperatures hold between 190°F and 205°F, backed by 18 PSI hot idle oil pressure and 55 PSI cruising pressure. Radiator thermal rejection capacity measures 2500 BTU per minute under Severe Commercial Fleet duty cycle standards.

Transmission Flywheel Mounting Parameters

The rear crankshaft flange uses an eight-bolt flywheel mounting pattern with an engineered 0.826-inch pilot counterbore diameter. Front crankshaft snout measures 1.102 inches with a machined Woodruff keyway slot for timing sprocket retention. Dial indicators measure crankshaft axial thrust endplay between 0.003 and 0.007 inches across all finished builds.

Commissioning Steps Maintenance Rules

Technicians must prime internal engine oil passages with an external pressure tank before turning the ignition key to protect fresh bearing surfaces from dry friction. Conduct a twenty-minute cam run-in procedure at 2000 RPM using high-zinc break-in lubricant. This engine is not engineered for aftermarket turbochargers, nitrous systems, or trailer towing weights exceeding vehicle chassis ratings.

• Inspect fluid reservoirs and accessory belts each shift
• Change motor oil and replace spin-on filter every 5000 miles
• Inspect cooling system hoses and radiator every twelve months

Fleet Guarantee Package Manifest

Supported by our 3-Year 100000-Mile commercial fleet warranty for verified transport operations. The heavy wooden container holds the remanufactured long block engine, high-capacity oil pump, complete engine install gasket kit, spark plug tube seals, and a certified dynamometer qualification inspection report.