WESPC 3135M115 Piston Kit for Perkins 1004.4 1004.4T Diesel Engines

Application

WESPC 3135M115 piston kit is designed for Perkins 1004.4 and 1004.4T diesel engines, widely used in agricultural tractors, construction machinery, and medium-capacity generator sets. This standard bore kit is intended for in-frame overhaul or top-end rebuilds, restoring OEM compression, oil control, and fuel efficiency. The eutectic aluminum piston with anodized crown and reinforced ring grooves ensures durability under sustained heavy-duty operation and high thermal load.

Generator sets

Applied in Perkins-powered gensets from 50–120 kVA, especially those using 1004.4T engines in prime or standby duty. The 3135M115 kit provides precise combustion sealing, stable output, and reduced oil consumption, supporting long service intervals in continuous or intermittent operation.

Industrial systems

Used in Massey Ferguson tractors, telehandlers, and construction loaders operating in dusty, high-load environments. The piston’s graphite-coated skirt reduces friction during break-in, while nitrided/chrome-faced rings maintain sealing integrity and resist wear over extended service life.

Technical specifications

Part number: 3135M115

Function: piston kit (includes piston, rings, pin, retainers)

Material: eutectic aluminum alloy piston with anodized crown; steel rings with nitrided top and chrome oil control

Compatible engines: Perkins 1004.4, 1004.4T

Bore size: standard (100.00 mm)

Warranty: 12 months

Interchange part number

3135M115; replaces Perkins OEM piston kits for 1004.4 / 1004.4T engines