Maintaining reliable diesel engine starts in cold weather is essential for drivers, technicians, and diesel equipment operators. The Boxonly PI-49 Glow Plug Set provides consistent pre-heating performance, precision fitment, and reliable operation in tough environments. This glow plug set is designed for compatibility with Isuzu diesel 4-cylinder engines, including 4JA1, 4JB1, 4JA1T, and 4JB1T. It fits vehicles such as the Isuzu ELF150, ELF250, ELF350, NPR, NQR, NKR, NHR, Pickup, and Trooper. It also supports various Bobcat and Sumitomo loader applications. Built with a corrosion-resistant alloy core, reinforced heating coil, and high-sealing construction, these plugs improve ignition, reduce white smoke, and support long-term durability. The Boxonly set is ideal for owners seeking high-value alternatives to OEM parts, backed by dependable aftermarket support. 📦 Product Specifications: Voltage: 12V Part Number: PI-49 Material: Heat-resistant alloy Quantity: 4 PCS Warranty: 6 Months 🚗 Compatible Vehicles (with Years): Isuzu ELF150, ELF250, ELF350 (varied years) Isuzu NPR, NQR, NKR, NHR Pickup (varied years) Isuzu Trooper (varied years) Mustang Bobcat Loaders: 843, 853, 1213, 960, 2060, 2070 Sumitomo Excavators: SH60 Kobelco Excavators: SK60 🆔 OE Numbers / Part Numbers: 8-94133759-5, 8-97073641-0, 8-94133-759-9 5-81410-023-6, 9-82513-928-9, 1-82513-043-1 8-94133-759-8, 8-97073-641-1, 8-97047-604-1 8-94135-377-4, 1-82513-044-0, 8-94140-115-5