All spark plugs have a "gap" set from the factory. Each plug, however, is made to fit multiple applications. You must always check the plug gap, for your particular application, before installation.

Will this fit a 2008 W211 E550 Mercedes ?

It’s compatible with 2008 Mercedes-Benz E550 base and E550 4matic according to the NGK website. It’s pre gap at .031” (0.8mm).

is this original spark plugs or fake?

I too was worried about this. As far as I can tell the ones that I got are real. I checked the packaging and the markings on the new plugs compared to the original plugs and the markings and location were spot on. They have been in for over a year and I have not had any issues.

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⚡ Ignite your drive with precision and power!

BUILT TO LAST - Crafted from durable machined materials designed to withstand high-stress engine environments.
EFFORTLESS UPGRADE - Compact and lightweight at just 23 grams, making installation quick and hassle-free.
TRUSTED BRAND RELIABILITY - From NGK, a global leader in ignition technology, ensuring dependable performance every mile.
OPTIMIZED IGNITION EFFICIENCY - Taper cut electrodes reduce voltage needs, boosting throttle response and engine smoothness.
PRECISION PLATINUM PERFORMANCE - Dual laser-welded platinum tips ensure unmatched longevity and consistent spark delivery.

The NGK4288 Spark Plug (Model PLKR7A) features laser-welded platinum tips on both center and ground electrodes for enhanced durability and consistent ignition. Its taper cut design lowers voltage requirements, improving throttle response and engine efficiency. Lightweight and machined for durability, this spark plug offers easy installation and reliable performance trusted by professionals worldwide.

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Manufacturer	NGK
Brand	NGK
Model	PLKR7A
Product Dimensions	11.05 x 5.69 x 5.28 cm; 23 g
Item model number	PLKR7A
Exterior	Machined
Manufacturer Part Number	4288
OEM Part Number	4288
Position	Unknown
Item Weight	23 g

NGK 4288 Spark Plug

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