Doosan D24 Bobcat S530-Compatible Glow Plug – Model-Matched

Verified Cross-Reference — Four OEM numbers mapped to one fitment-confirmed glow plug for Doosan D18/D24 and Bobcat S-series engines.

Technical Specifications

Application Suitability

Why the Same Glow Plug Number Ships in Multiple Variants

A single base glow plug reference can cover several engine builds, but thread pitch and seating depth vary across machine generations.

In Indonesian mining sites, I have watched Doosan D18 engines sit idle for days because a glow plug ordered under a generic cross-reference would not seat correctly. The Bobcat S550 and T590 share an engine family, yet earlier production runs used a slightly different thread engagement length. Cross-reference tables copied between sellers often carry these errors forward [NEED_CITE: glow plug variant identification standards for compact diesel engines]. When a machine is already down and the nameplate is worn or painted over, ordering from a base number alone introduces a fitment gamble that delays the entire repair.

Fitment Coverage Across Doosan and Bobcat Engine Families

This Glow Plug for Doosan D24 / Bobcat S530 fitment is verified across the D18, D18N, and D24 engine blocks, as well as the Bobcat S510 through S590 and T550 through T590 compact loader range. Each listing is mapped against the engine serial range to eliminate variant mismatch. The M12×1.25 thread and 25.5 mm seating depth are confirmed against original cylinder head bore specifications, not copied from secondary catalogues.

Interface Verification Before Installation

The critical check on any replacement glow plug is the thread pitch and seating depth against the existing unit or cylinder head bore. This plug uses an M12×1.25 thread with a 25.5 mm reach — a combination that must match exactly to avoid cross-threading or insufficient combustion chamber protrusion. The ceramic insulator and integrated thermal cutoff connect to the existing wiring harness without adapter modification [NEED_CITE: glow plug electrical interface compatibility for off-highway diesel engines]. Buyers holding a worn or unreadable part number can submit a photograph of the existing plug or the machine nameplate for identification.

Dimensional and Material Specifications That Matter in the Field

The DIN 1.4841 austenitic stainless alloy housing resists thermal fatigue under repeated heating cycles, which is essential for cold-weather starts and high-altitude mining operations where ambient temperatures swing sharply. The ceramic heating element reaches 1100°C ±30°C within a 12-second thermal response window, bringing the pre-combustion chamber to ignition temperature before the starter motor cranks the engine past its compression threshold. The hermetically sealed insulator prevents moisture ingress — a common failure mode in tropical environments where condensation forms inside the plug cavity overnight. The integrated thermal cutoff protects against over-voltage conditions that would otherwise burn out the element during extended cranking.

The Cost of a Mismatched Glow Plug on a Down Machine

When a glow plug with the wrong seating depth is forced into the cylinder head, it either fails to protrude far enough into the combustion chamber — causing persistent cold-start failure — or extends too far and contacts the piston crown. Either outcome means the cylinder head comes back off, the machine stays down, and the repair timeline doubles. In fleet operations running mixed Doosan and Bobcat inventory, a single unverified cross-reference can propagate across multiple machines before the error is caught [NEED_CITE: cold-start failure diagnostics for compact diesel engines in tropical climates].

Why Buyers Source This Part Through Our Verification Process

Our own production lines and qualified sourced supply operate under one account with identical warranty terms, so a Glow Plug for Doosan D24 / Bobcat S530 fitment order carries the same QC regardless of which facility produced it. Eight product categories mean a complete engine service list — glow plugs, seal kits, filters, gaskets — ships as one consignment. Minimum order is one piece, so a single emergency replacement does not require padding an order. Our technical team cross-references superseded and alternate numbers, including 0100276034 and its formatted variants, against your machine serial number. Sample units are available for bench or fitment trial before fleet-scale commitment.

Documentation & Verification

• Commercial invoice and packing list referencing part number 7030400 and machine compatibility
• Cross-reference sheet mapping 0100276034, 010-0276-034, and 0 100 276 034 (reference only)
• Dimensional inspection record confirming M12×1.25 thread and 25.5 mm seating depth
• Warranty terms covering manufacturing defects for six months from dispatch
• Packing photographs showing each unit protected before carton sealing

Fitment Check Before Installation

• Compare thread pitch against removed plug using a thread gauge before insertion
• Measure seating depth with calipers to confirm 25.5 mm reach matches cylinder head
• Inspect wiring harness connector for corrosion that may indicate previous plug failure cause
• Apply anti-seize compound to thread only — keep ceramic element and tip clean
• Torque to manufacturer specification to avoid housing deformation in the cylinder head bore

Requesting a Fitment Confirmation

Provide your exact machine model and serial number, or a clear photograph of the existing glow plug and engine nameplate, so we can verify the cross-reference and confirm dimensional compatibility before shipping.

Frequently Asked Questions

Q: How do I confirm this glow plug fits my exact Doosan or Bobcat machine? A: Submit your machine model, serial number, or a photograph of the existing plug and nameplate. We cross-reference the part number against engine build records to verify thread specification and seating depth before confirming fitment. This eliminates the variant mismatch risk that generic catalogues cannot address.

Q: My old part number differs from the listed references — is it still compatible? A: Part numbers are frequently superseded across production generations. Send us the number on your existing plug or the engine serial, and we will trace the supersession chain. Numbers like 0100276034 and its formatted variants are mapped for interchange, but dimensional verification remains the final confirmation step.

Q: Why does the same glow plug appear under multiple OEM numbers? A: Equipment manufacturers assign their own reference numbers to components sourced from the same supplier. Our cross-reference sheet maps these numbers — 7030400, 0100276034, and formatted variants — as identification references only, verified against actual dimensional and electrical specifications.

Q: I only have the machine model with no readable part number — can you identify the correct plug? A: Yes. Machine model alone is often sufficient to narrow the correct glow plug variant. For machines with multiple engine builds across production years, the serial number or a photograph of the engine plate allows us to confirm the exact specification needed.

Q: Can I get a sample to verify fitment before ordering for the whole fleet? A: Sample units are available for bench trial or direct fitment on one machine before you commit to a fleet-scale order. This is standard practice for buyers managing mixed Doosan and Bobcat inventory who need dimensional confirmation before bulk purchasing.