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Details
| Specification | Value |
|---|---|
| Brand | HIDRIA |
| MPN | h1712 |
| Voltage [V] | 11 V |
| Thread Size | M12x1.25 |
| Overall Length [mm] | 72 mm |
| Fitting Depth [mm] | 25 mm |
| Terminal Type | M4 |
OE/OEM numbers (5)
Search by this OE number to find compatible parts
- AC—138G
- FIAT / LANCIA—46447610
- FIAT / LANCIA—71735459
- FIAT / LANCIA—7777837
- GENERAL MOTORS / OPEL—88 900 729
Where this part fits
Original-fit position for OE 71735459. The red ring marks where this part installs on the vehicle.
About this product
The HIDRIA Glow Plug (H1 712) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Voltage [V]: Bronze V, Cone Pitch: 63, Thread Size: M12x1.25, Overall Length [mm]: 72 mm, Spanner Size: Zinc. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit FIAT, LANCIA models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 0 100 226 249, 0 100 226 450, 0 250 202 034, 0 250 251 471 and 15 more. Matching these numbers confirms a like-for-like replacement with no loss of function. HIDRIA is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Glow Plug buying guide
Why replace this part?
Glow plugs pre-heat diesel combustion chambers to ensure reliable cold starting and clean combustion on startup. Worn glow plugs cause difficult cold-weather starting, white smoke on startup, and increased wear on starter motors.
Signs you need a replacement
- Difficult starting in cold weather
- white or blue smoke on cold start
- glow plug warning light staying on
- engine misfiring during warm-up
- increased starter motor cranking time
When to replace
Every 60,000–80,000 miles or when cold-starting problems develop. Replace all plugs as a set — a single failed plug causes uneven cylinder temperatures.
Suitable cars
Equivalent products (14)
Glow Plug HIDRIA H1 712 — compatible car models
| Car models | FIAT: BRAVA (182), BRAVO I (182), MAREA (185), MAREA Weekend (185); LANCIA: KAPPA (838), KAPPA SW (838) |
|---|---|
| Engines | 1.9 JTD; 1.9 TD 100 (185AX); 1.9 TD 100 (185BX); 2.4 T.DS (838AE1AA, 838AH1AA); 2.4 T.DS (838BH1AA) |
| Year of manufacture | 1994-2007 |
| Manufacturer article number (MPN) | H1 712 |
| OE part numbers | 138G, 46447610, 71735459, 7777837, 88 900 729 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
HIDRIA h1712 . Cone Pitch: 63. Fitting Depth [mm]: 25 mm. Overall Length [mm]: 72 mm. Spanner Size: 12. Terminal Type: M4. Thread Size: M12x1.25. Voltage [V]: 11 V
- 1x Glow Plug
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Glow Plug compatible with my car?
This Glow Plug fits FIAT, LANCIA vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this HIDRIA Glow Plug have?
This HIDRIA Glow Plug has the following specifications: Voltage [V]: 11 V; Cone Pitch: 63; Thread Size: M12x1.25; Overall Length [mm]: 72 mm; Spanner Size: 12; Fitting Depth [mm]: 25 mm. Check the full specifications table above for complete details.
What OE part numbers does this Glow Plug replace?
This Glow Plug replaces OE part numbers: 138G, 46447610, 71735459, 7777837, 88 900 729. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Glow Plug cost?
This HIDRIA Glow Plug is available for £11.99. Glow Plug prices vary depending on brand, specifications, and vehicle compatibility. HIDRIA parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Glow Plug?
On diesel engines: difficulty starting in cold weather, excessive white smoke from the exhaust on startup, rough running until the engine warms, the glow plug warning light staying on, or one cylinder misfiring when cold.
What tools do I need to replace a Glow Plug?
Tools needed: 10mm hex deep socket for glow plug, torque wrench (10-15 Nm), penetrating oil (apply 24 hours before removal on high-mileage engines), glow plug extraction kit (for seized plugs). Difficulty: Moderate DIY. Safety warning: Apply penetrating oil well in advance on older diesel engines -- forced removal of seized glow plugs snaps them in the cylinder head, requiring specialist extraction. Never over-torque replacements.
Can I use this part as a replacement for OE 138G?
Yes, this HIDRIA Glow Plug is a direct replacement for OE part number 138G. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
