The Isuzu 8970405020 Glow Plug Timer Assembly is a genuine OEM component designed to precisely control the glow plug heating cycle in various Isuzu N-Series, F-Series, and W-Series commercial vehicles. This essential electrical part ensures optimal engine starting performance, especially in cold weather conditions. Confirmed applications include Isuzu NPR, NQR, NRR, FTR, FVR, FRR, W3500, W4500, W5500, and W5500HD models. With a weight of 0.12 kg and dimensions of 95mm length, 51mm width, and 51mm height, this timer assembly is built to Isuzu's exacting standards for reliability and durability.