ISUZU 4JB1 4JA1 Glow Plug 11V M12×1.25 Thread Double Coil Design Diesel Cold Start Heater
| Voltage: | 11 V | Overall Length: | 135.4 Mm |
| Thread Size: | M12 × 1.25 | Tightening Torque: | 15–25 N·m |
| Fitting Depth: | 24 Mm | Net Weight: | 0.070 Kg |
| Spanner Size: | 12 Mm | Resistance: | 3 Ohms Or Higher |
| High Light: | 11V Glow Plug,M12×1.25 Thread Glow Plug,Double Coil Design Diesel Cold Start Heater |
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Glow Plug 8-94140115-0 8941401150 for ISUZU 4JB1 4JA1 NHR 100P 600P — Verified OEM Fit 11V M12×1.25 Diesel Cold Start Heater
This glow plug is a verified direct-fit replacement for ISUZU NHR / 100P / 600P / NKR / NPR / TFR / TFS light trucks and pickups equipped with the 4JB1 / 4JA1 diesel engine. This critical cold-start heating component is responsible for heating the combustion chamber to ensure reliable engine starting in cold conditions.
The glow plug is a pencil-type electric heating element installed in the cylinder head combustion chamber. When activated, it rapidly heats its tip to pre-heat the combustion chamber air, ensuring diesel fuel atomizes and ignites reliably in low temperatures. The ISUZU 4JB1 / 4JA1 glow plug operates at 11V with a double coil design for rapid heat-up and self-regulating temperature control.
- Hard starting or no-start in cold weather
- Excessive white smoke after cold start
- Rough idle after cold start
- Glow plug indicator light stays on or flashes
- Increased glow plug resistance (3 ohms or higher)
- Engine starts but stalls immediately
| Specification | Value | Source |
|---|---|---|
| Part Number (Short) | 8-94140115-0 | ISUZU OEM Parts Database |
| Part Number (Long) | 8941401150 | ISUZU OEM Parts Database |
| Voltage | 11 V | Lucas LP028 specification |
| Thread Size | M12 × 1.25 | Lucas LP028 specification |
| Overall Length | 135.4 mm | Lucas LP028 specification |
| Fitting Depth | 24 mm | Lucas LP028 specification |
| Recommended Torque | 20 N·m | Denso DG-108 specification |
| Break-Off Torque | 45 N·m | HERTH+BUSS JAKOPARTS specification |
| Type | Number |
|---|---|
| Primary OEM — Short | 8-94140115-0 |
| Primary OEM — Long | 8941401150 |
| Alternate Formats | 8-94140-115-0, 94140115, 9414-0115 |
| Competitive Cross-Reference | NGK 7995, Denso DG-108, Beru GN061, Champion CH306, Lucas LP028 |
| Part Number: | 8-94140115-0 8941401150 | Product Name: | Glow Plug |
| Car Model: | 4JB1 4JA1 | Engine Model: | 4JB1 4JA1 |
| Condition: | 100% Brand New | Origin: | China Mainland |
Primary Applications: ISUZU ELF 150, ELF 250, 100P, 600P, NHR, NPR, NKR, Pickup, Trooper, MU Wizzard, Faster Rodeo
Non-ISUZU Applications: Opel Campo, Opel Frontera, Vauxhall Brava Pickup, Vauxhall Frontera, JMC 1030/1040
| Feature | Benefit |
|---|---|
| 11V Double Coil Pencil-Type Design | Rapid heat-up and self-regulating temperature control for reliable cold starts |
| OEM-Exact M12×1.25 Thread | Precision-matched to ISUZU 4JB1 / 4JA1 cylinder head — direct drop-in fit |
| 135.4 mm Overall Length / 24 mm Fitting Depth | Exact fit for ISUZU NHR / 100P / 600P combustion chamber |
| ISO/TS 16949 Quality System | Full traceability with material certificates and batch inspection reports |
- Ensure engine is completely cold. Disconnect battery negative terminal.
- Remove glow plug electrical connector and bus bar.
- Use 12 mm deep socket to remove old glow plug.
- Test new glow plug for continuity and resistance.
- Apply high-temperature anti-seize compound to threads.
- Tighten to 20 N·m using torque wrench.
- Reconnect electrical components and battery.
- Every 20,000 km: Test glow plugs for continuity and resistance
- Every 40,000-50,000 km: Inspect for carbon buildup or tip deformation
- When cold starting difficulty occurs: Test glow plugs immediately
- Whenever cylinder head is removed: Inspect and test glow plugs
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