Genuine Porsche Engine Spark Plug 99917013090

Genuine Porsche Engine Spark Plug 99917013090 — Precise OE Ignition

The Genuine Porsche Engine Spark Plug 99917013090 is the original-equipment spark plug specified for your Porsche's engine. Each cylinder depends on its plug firing cleanly thousands of times per minute — when plugs wear, combustion deteriorates and you feel it as rough idle, hesitation, misfires and thirstier fuel consumption.

The genuine 99917013090 matches the exact heat range, thread reach and electrode specification your engine's ignition calibration was built around, keeping combustion clean and power delivery sharp.

Function — What the Spark Plug Does

The spark plug's job is simple and relentless: deliver a precisely timed spark to ignite the compressed air-fuel mixture, every cycle, in every cylinder. The 99917013090 is engineered to Porsche's specification — electrode materials that resist erosion, an insulator that withstands combustion pressure and temperature, and a heat range that keeps the plug hot enough to burn off deposits but cool enough to avoid pre-ignition.

Failure Symptoms — When Plugs Need Replacing

Watch for a lumpy idle, stumbling or hesitation when you accelerate, a flashing check-engine light signalling misfires, reluctant cold starts and a drop in fuel economy. Plugs removed at service that show worn-down electrodes, black carbon fouling or oily deposits are telling you the engine hasn't been breathing fire properly for a while.

Genuine Advantage — Why OE Plugs Matter

Porsche engines run precise ignition strategies, and the plug is a calibrated component of that system. Genuine plugs deliver the specified spark characteristics across all cylinders, so the engine management's timing and fuel maps work as intended. A subtly wrong aftermarket heat range fouls in stop-start traffic or runs too hot at sustained speed — either way, plug life drops and misfire risk climbs, threatening the catalytic converters.

Install Notes — Care With Torque and Gaps

Fit plugs on a cold engine: clear debris from the plug wells, remove the old plugs and coils, and install the new 99917013090 set torqued to the manufacturer's specification. Never force a plug — clean threads and correct torque protect the cylinder head and ensure proper heat transfer. Replace the complete set and inspect the ignition coils while you have access.

Specifications

Genuine vs Aftermarket Spark Plugs

Verification: compare the OE part number 99917013090 on the packaging with your vehicle's parts catalogue before fitting.

Why Choose European Autospares for This Part

Combustion as Calibrated

The genuine plug keeps your engine's ignition timing and fuel maps working exactly as Porsche designed — smooth idle, sharp response, full power.

Full-Set Consistency

Every plug in a genuine set performs identically, so all cylinders pull evenly with no weak cylinder dragging performance down.

Cheaper Than a Misfire

Correct plugs prevent the misfires that kill ignition coils and catalytic converters — far more expensive repairs than a set of plugs.

Dubai Stock for Service Intervals

On the shelf in Dubai with fast UAE delivery — schedule them into your next service and drive out with the engine running like new.

Not 100% sure it fits? Send us your complete VIN (vehicle identification number) before ordering. Our parts team will verify the OE part number against your exact vehicle and confirm fitment — free of charge, before you buy.

Complete the Job

This part sits inside our Engine Parts range. Explore the full Porsche Spare Parts catalogue in our Porsche Spare Parts collection. Electrical System Parts Exhaust System Parts All parts ship fast across the UAE and the GCC from our Dubai warehouse.

Order the genuine OE part number 99917013090 today and restore your vehicle to factory specification. Every part is quality-checked before dispatch, and our Dubai team is on hand for fitment questions before and after your purchase.