8-98290-755-0 Glow Plug Set (4 pcs), 11V–14.5V, dual-coil ceramic — replacement for Isuzu 4JJ1 / 4HK1 engines. Held in Guangzhou warehouse stock, dispatch within 2–5 working days via express, air, or sea freight. Identify fitment from engine serial or a photo of the worn plug. Single-set orders accepted for urgent field repairs. Arrival timing quoted before order confirmation.
In-Stock Fast Dispatch — Guangzhou warehouse holds this cold-start component ready to ship, cutting typical multi-week lead times down to days for urgent field repairs.
| Parameter | Value |
|---|---|
| Part Number | 8-98290-755-0 |
| Product Type | Glow Plug |
| Cross-Reference | 8-98290-755-0, 8-97379-296-0 (for identification purposes) |
| Machine Fitment | Isuzu NPR, NPR-HD, NQR, NRR, FTR, FVR; Chevrolet W3500/W4500/W5500 Tiltmaster; GMC W3500/W4500/W5500 Forward |
| Engine Fitment | Isuzu 4JJ1, 4HK1, 4HK1-TCS, 4HK1-TCN |
| Quantity per Set | 4 pcs |
| Operating Voltage | 11V–14.5V |
| Surface Temperature | 1000°C |
| Heat-up Time | 12 seconds |
| Sheath Material | AISI 304 Stainless Steel |
| Internal Resistance | 0.95 ± 0.05 Ω |
| Recommended Torque | 18–22 N·m |
| Heating Element Type | Dual-coil ceramic |
| Condition | New Aftermarket |
| Warranty | 6 months against manufacturing defects |
| Standards | ISO 9001 |
| Failure Symptom | Replacement Urgency |
|---|---|
| Extended cranking without ignition in cool weather | Immediate — vehicle cannot start shift |
| White smoke on startup followed by rough idle | High — indicates incomplete combustion |
| Dashboard glow plug warning light illuminated | Medium — schedule replacement before cold snap |
| Single cylinder misfire traced to plug circuit | Immediate — affects drivability and emissions |
We ship the replacement glow plug from stock within days, not weeks.
A fleet operator in a regional depot called us after their local supplier quoted a bulk minimum on a single failed plug, leaving an Isuzu NPR off the road for a scheduled delivery route. The machine was down, the diagnosis was clear, but the minimum order quantity blocked the purchase. We have seen this pattern repeat across urban delivery fleets and demolition contractors alike — a minor electrical component halts a machine that otherwise runs fine [NEED_CITE: common causes of cold-start failure in light commercial diesel fleets]. Waiting for confirmation on a part number when the stamped marking is worn off adds further delay, turning a quick fix into a multi-day outage.
This glow plug is maintained in our Guangzhou warehouse as a high-turnover cold-start item. When a workshop supervisor sends a photo of a corroded or painted-over nameplate, our technical team cross-references the machine model and engine serial to confirm fitment within hours. The MOQ of one set (4 pcs) means you do not need to pad an order with stock you will not use. Whether the truck is an Isuzu FTR waiting at a job site or an NQR in a municipal fleet, the part ships without waiting for a production batch.
Once the fitment is confirmed, we quote express, air, and sea freight options with estimated arrival windows so you can choose based on how long the machine has already been down. Express couriers deliver tracked, door-to-door, which suits a single truck off the road. For a fleet depot restocking multiple units, air freight balances speed and cost on heavier consolidated shipments. Every dispatch includes real-time tracking details. Response to inquiries continues outside standard business hours to match the time zones of overseas buyers [NEED_CITE: international freight transit time estimates for small parcel versus air cargo].
The AISI 304 stainless steel sheath resists corrosion from combustion chamber condensate, which is the primary degradation path for plugs in stop-start urban delivery cycles. The dual-coil ceramic heating element reaches 1000°C surface temperature within 12 seconds, providing the thermal energy needed for reliable ignition of the air-fuel mixture in a cold cylinder. Internal resistance at 0.95 ± 0.05 Ω must match the engine control module's expected range; a plug outside this window can trigger a fault code even if it physically fits. The recommended installation torque of 18–22 N·m prevents thread damage in the aluminium cylinder head while ensuring a gas-tight seal.
Ordering a plug that physically threads in but carries the wrong resistance value leads to repeated cold-start failures and potential ECU fault codes, sending the technician back to diagnostics. A second round of downtime on the same truck compounds the initial delay, especially when the vehicle is needed for a contracted route or a concrete pour window. Confirming the part from an engine serial number or a photograph before dispatch eliminates this guesswork and keeps the repair to a single intervention [NEED_CITE: diagnostic time cost of incorrect part fitment in commercial vehicle repair].
We produce selected part lines in our own facility and source the remainder from qualified ISO-certified partners, so every glow plug carries the same quality control and six-month warranty regardless of production origin. Eight product categories under one account means related items — seal kits, filters, electrical connectors — can ship on the same consignment. The one-piece minimum applies here and across our range, so an emergency single-set order is never blocked. Guangzhou warehouse stock on fast-failure items like this plug keeps dispatch times short. Part identification from a machine model, a photograph, or a worn nameplate image removes the need for a legible stamp. Our technical team verifies compatibility and confirms the correct variant before the order ships.
To get a fast fitment answer, provide the Isuzu engine model (4JJ1, 4HK1, 4HK1-TCS, or 4HK1-TCN), the truck model and year, or a clear photograph of the existing plug and nameplate. We will confirm stock status, the correct part variant, and a freight quote with estimated arrival so you can decide how urgently to ship.
Q: Is this glow plug set currently in stock and when will it ship? A: This part is held in our Guangzhou warehouse as a common cold-start item. Stock status is confirmed at the time of your inquiry. Once confirmed and ordered, dispatch typically occurs within a few working days, with express tracking provided so you can monitor transit to your location.
Q: Can I order just one set of 4 pieces or is there a larger minimum? A: The minimum order is one set of four plugs. This supports urgent single-vehicle repairs and diagnostic validation without requiring you to commit to a larger batch. You order exactly what the job needs.
Q: How long does delivery take by express versus air versus sea? A: Express courier is the fastest option, suited for a single urgent set, and delivers door-to-door with tracking. Air freight is practical for multiple sets or consolidated orders. Sea freight is economical for larger volumes but carries longer transit times. We quote estimated arrival windows for each option upfront.
Q: The number on my old glow plug is worn off — can you confirm fitment? A: Yes. Send us the machine model, the engine serial number, or a photograph of the existing plug and the engine nameplate. Our technical team cross-references these against our compatibility records to confirm the correct variant before you order.
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