Engine Manufacturer: Pratt & Whitney

Price: $3,025.00

Engine Preheat System – P&W 9 cylinder engines – 115 Volt

Engine Preheat System – P&W 9 cylinder engines – 115 Volt

This preheat kit contains electrical resistance heat elements located on each cylinder assembly, and six pad heat elements (engine crankcase, hydraulic tank, oil cooler, and 2 or 1 on engine oil tank).  This multipoint configuration fully preheats the engine and attached accessories for reduced wear on startup and reduced run-up times at any temperature.  Power is routed to the elements through a dedicated wiring assembly with system power indication and circuit overload protection. System is self-regulating through design. Heated components reach an average state of thermal equilibrium in approximately six hours.

This preheat kit when installed will supply either:
• 730 watts with a 6.4 amp draw at 115 volts for a small engine oil tank
• 850 watts with a 7.4 amp draw at 115 volts for a large engine oil tank

* Required Bonding sealant sold separately. Quantity 2, PN: TU02788

Applicable on most P&W type 9RA engines: R-985 Wasp Jr. and R-1340 engines.

Applicable on AT-6G aircraft.

Cylinder Piston/Radial



R1340 R-1340

R-985 – TCDS E-123: WASP JR. SB, SB-2, SB-3, TIB2, TIB3, B-4, B-5.
5E-1: R-985-5, R-985-13, R-985-50, R-985-17, R-985-19, R-985-23, R-985-48, R-985-AN-1M1, R-985-AN-2, R-985-AN-4,
R-985-AN-6, R-985-AN-6B, R-985-AN-8, R-985-AN-10, R-985-AN-12, R-985-AN-12B, R-985-AN-14B, R-985-25,
R-985-27, R-985-39, R-985-AN-39A, R-985-AN-1, R-985-AN-3, R-985-AN-14BM1, R-985-AN-5.
R-1340 – TCDS E-129: WASP S1H1, S1H1-G (3:2 reduction gearing), S1H2, S1H4, S1H5-G, S3H2, R-1340-61.
E-142: WASP S3H1-G, R-1340-59.
5E-2: SR-1340-E, R-1340-19, R-1340-22, R-1340-29, R-1340-36, -40, -47, -49, -49M1, -51, -AN-1,
R-1340-AN-2 (3:2 reduction gearing), R-1340-51M1, -53, -57.

TAS75-03, 1049; TAS75-03SP, 2084; TAS75-03SR, 2085; TSP9CYL-2986-924 02986)


Engine Manufacturer

Pratt & Whitney



USA-Cert (8130-3 available)

PMA kit (Yes)

Enquiry About TSP9CYL-2904-115

Call About Product: 952-224-4425