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Hersteller: European Autospares Trading LLC
Genuine Porsche Engine Spark Plug 99917023290
Dhs. 184.00
Hersteller: European Autospares Trading LLC
Genuine Porsche Engine Spark Plug 99917023290
Dhs. 184.00
Beschreibung
xGenuine Porsche Spark Plug 99917023290 - 997.2 X51 Powerkit Ignition Plug
The X51 Powerkit 911 asks more of its ignition system than a standard Carrera, and it needs the exact plug Porsche specified for it. The genuine Porsche 99917023290 spark plug is the factory ignition plug for 997.2 models fitted with the X51 Powerkit: the correct heat range, the correct electrode gap, and the correct thread reach for the 3.6 and 3.8-litre engines. Six are required per engine, and replacing them as a set is the only way to keep combustion even across all cylinders.
What the Spark Plug Does
The spark plug delivers the timed spark that ignites the air-fuel mixture in each cylinder. In the 997.2's direct-injection flat-six, the plug operates under high cylinder pressures and temperatures, and the X51 Powerkit's revised calibration makes the ignition demands stricter still. The 99917023290 is specified with the electrode gap and heat range Porsche engineered for these engines, so the spark stays strong and consistent from idle to the red line. A plug with the wrong heat range or gap forces the ignition system to compensate, which it can only do within narrow limits.
When Spark Plugs Need Replacing
Worn plugs announce themselves clearly: rough idle, hesitation under load, reduced fuel efficiency, and misfire fault codes are the classic signs. On the 997.2, excessive carbon build-up and electrode wear degrade the spark over time, and the engine management will eventually log misfires if the plugs are left too long. Because plugs wear as a set, replacing only the worst one leaves the remaining five to fail on their own schedule. Porsche specifies replacement as a complete set of six, and the service is one of the most cost-effective ways to restore crisp throttle response and clean running.
Why the Genuine Plug Matters for the X51
The 99917023290 is not a generic 997 plug. It is the specific plug Porsche catalogues for 997.2 cars with the X51 Powerkit, and that distinction matters: the Powerkit's higher-output calibration was validated with this exact plug specification. The genuine plug is manufactured to Porsche's specification by Bosch (Bosch reference FGR 4NQE), with the M14 x 1.25 thread, 26.5 mm reach, and 1.6 mm electrode gap the engine was designed around. A generic plug with a different heat range or gap can cause pre-ignition or fouling in these engines. For a Powerkit car, the correct plug is cheap insurance for expensive internals.
Fitting Notes
Spark plug replacement on the 997.2 flat-six requires access past the rear wheels and exhaust heat shielding, so it is a job for a technician with the right tools and a torque wrench. The plugs tighten to 28 Nm, and correct torque matters: overtightening risks thread damage in the aluminium heads, while undertightening risks poor heat transfer and loosening. Always replace all six plugs as a set, confirm the part number against the old plugs before fitting, and never re-gap a plug that has been dropped. Send us your VIN if there is any doubt about X51 fitment.
Specifications
| Brand | Porsche |
|---|---|
| OE Part Number | 99917023290 |
| Part Type | Spark plug |
| Manufacturer | Bosch (to Porsche specification) |
| Bosch Cross-Reference | FGR 4NQE / 0 242 250 518 |
| Thread Size | M14 x 1.25 |
| Thread Reach | 26.5 mm |
| Electrode Gap | 1.6 mm |
| Hex Size | 16 mm |
| Tightening Torque | 28 Nm |
| Quantity Per Engine | 6 (sold individually, replace as a set) |
| Fitment | Porsche 911 (997.2) with X51 Powerkit |
| Condition | New, genuine Porsche part |
| Packaging | Factory Porsche packaging |
Genuine vs Aftermarket Spark Plug
| Feature | Genuine 99917023290 | Generic / Aftermarket |
|---|---|---|
| Application specificity | Catalogued specifically for 997.2 X51 Powerkit engines | Often a generic 997 plug that "fits" but was not validated for the X51 calibration |
| Heat range | Porsche-specified for the Powerkit's operating temperatures | May run too hot or too cold for the X51 tune |
| Electrode gap | Factory-set 1.6 mm for these engines | Gap may differ or drift sooner |
| Thread and reach | M14 x 1.25 with 26.5 mm reach, exactly as designed | Wrong reach alters combustion chamber geometry |
| Quality control | Bosch manufacture to Porsche OE standards | Variable electrode and insulator quality |
| Part traceability | Traceable Porsche OE number 99917023290 | Counterfeit plugs are a known problem in this segment |
Verification note: X51-specific fitment (2010–2012 911 Carrera / 4 / S / 4S / GTS / Speedster / Targa 4S, 997.2) confirmed against ECS Tuning and Europa Parts listings for 99917023290; Bosch cross-reference FGR 4NQE / 0 242 250 518 and dimensional data (thread, reach, gap, torque) per the Bosch-published cross-reference data (sources accessed 2026-10-12). Always confirm by VIN, as plug specification is engine-specific.
Why Choose European Auto Spares
The Correct Plug for the X51, Not a Generic 997 Plug
We supply the genuine 99917023290 catalogued for the Powerkit, not a one-size-fits-all 997 plug. On an X51 engine, that specificity protects against pre-ignition and fouling.
Genuine Bosch-Manufactured Quality
The genuine plug is built by Bosch to Porsche's OE standard, so electrode, insulator, and heat range are exactly what the engine management expects.
VIN Verification Before Dispatch
Plug specification is engine-specific. Send your VIN and we confirm the 99917023290 against your exact 997.2 before it ships.
Full Set of Six, Ready to Fit
Plugs are sold individually and should always be replaced as a complete set of six. Order the full set in one go and service the engine properly.
Fast UAE Supply for Service Work
Spark plugs are service items with a workshop waiting. We supply across the UAE so your 997.2 service stays on schedule.
Complete the Job
If you are servicing the ignition system, browse our Engine Parts collection for related genuine components. The Genuine Porsche Spark Plug 99917015190 covers other Porsche models in the household, and the Genuine Porsche Engine Idle Speed Control Valve 92860616102 is worth inspecting when idle quality is the complaint.
Confirm Fitment With Your VIN
The 99917023290 is specific to 997.2 engines with the X51 Powerkit and must not be assumed correct for other 911 variants. Send us your complete VIN before ordering and we will verify the plug against your exact engine, so all six arrive correct the first time.
Order the genuine Porsche spark plug 99917023290 from European Auto Spares and keep your X51 Powerkit 911 running exactly as Porsche calibrated it.
Passformdetails
xPorsche Spark Plug Fitment
| Porsche Model | Application |
|---|---|
| Porsche 911 Carrera (997.2) | 2010–2012, X51 Powerkit only — 6 plugs per engine |
| Porsche 911 Carrera 4 (997.2) | 2010–2012, X51 Powerkit only — 6 plugs per engine |
| Porsche 911 Carrera S (997.2) | 2010–2012, X51 Powerkit only — 6 plugs per engine |
| Porsche 911 Carrera 4S (997.2) | 2010–2012, X51 Powerkit only — 6 plugs per engine |
| Porsche 911 Carrera GTS (997.2) | 2011, X51 Powerkit — 6 plugs per engine |
| Porsche 911 Speedster (997.2) | 2011, X51 Powerkit — 6 plugs per engine |
| Porsche 911 Targa 4S (997.2) | 2010–2012, X51 Powerkit only — 6 plugs per engine |
Technician's Advisory: The 99917023290 is X51 Powerkit-specific and must not be fitted to non-Powerkit 997.2 engines without confirming the correct plug specification. Always verify by VIN before ordering — our team checks compatibility before dispatch. Replace all six plugs as a set and tighten to 28 Nm with a calibrated torque wrench.
Häufig gestellte Fragen
xFrequently Asked Questions
The 99917023290 is the genuine Porsche spark plug catalogued specifically for 911 (997.2) models with the X51 Powerkit. It carries the exact heat range, 1.6 mm electrode gap, and M14 x 1.25 thread specification Porsche validated for the Powerkit calibration. Manufactured by Bosch (FGR 4NQE) to Porsche OE standards, it is not interchangeable with generic 997 plugs.
Classic symptoms are rough idle, hesitation under load, falling fuel efficiency, and misfire fault codes. On the 997.2, electrode wear and carbon build-up degrade the spark gradually, so performance fades before a fault code appears. Because plugs wear as a set, replace all six together rather than chasing individual misfires one plug at a time.
The 99917023290 fits 2010–2012 Porsche 911 (997.2) Carrera, Carrera 4, Carrera S, Carrera 4S, Carrera GTS, Speedster, and Targa 4S models equipped with the X51 Powerkit. It should not be assumed correct for non-Powerkit 997.2 cars or other 911 generations. Send us your VIN before ordering and we will confirm the exact plug specification for your engine.
We strongly advise against it. The X51 calibration was validated with this exact plug specification, and a generic plug with a different heat range or gap can cause pre-ignition or fouling in these engines. Counterfeit plugs are also a known problem. The genuine 99917023290 is inexpensive relative to the engine it protects, making it poor economy to substitute.
This is a brand-new genuine Porsche part in factory packaging, covered against manufacturing defects under the standard genuine parts warranty, and your statutory consumer rights apply in the UAE. If the plugs arrive damaged or incorrect due to our error, we will replace or refund them. Confirm fitment by VIN before installation, as fitted plugs cannot be resold.
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xVersand & Rückgabe
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
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