T420141 Perkins 12V Glow Plug (Heater Plug), designed for cold-start preheating of Perkins 1100 Series diesel engines.

I. Key Specifications

Part Number: T420141

Brand: Perkins

Type: Glow Plug (Cold-Start Heater Plug)

Voltage: 12VDC

Compatible Engines:

Perkins 1100 Series: 1103, 1104, 1106 (including 1106D-70TA), and other diesel engines

NSN: 2920-01-616-6169

II. Compatible Equipment

Construction Machinery: Excavators, Loaders, Road Rollers, Forklifts

Generator Sets: Perkins 1100 Series-powered generator sets

Agricultural Machinery: Tractors, Harvesters

Industrial Equipment: Air Compressors, Water Pumps

IV. Common Faults and Diagnostics

Fault Symptoms: Difficulty cold-starting, white smoke emitted during startup, engine vibration, abnormal glow plug indicator light

Diagnostic Methods:

Measure resistance using a multimeter: Normal range is approximately 0.5–2 Ω (at 12V)

Check the wiring harness connector for oxidation, looseness, or short circuits

Listen for the glow plug's operating sound during cold-starting (a faint "sizzling" sound)