14mm socket is standard - 10mm and 12mm are less common, found in only some motorcycles. What is more important is the thread reach - too little or too much are both bad. Amazon has a nice system of selecting the vehicle and showing which plugs fit that vehicle. Bosch has a similar system at BoschAutoParts.com. Remember to NEVER gap-adjust iridium plugs.

BOSCH9603 OE Fine Wire Double Iridium Spark Plug - Single

BOSCH9603 OE Fine Wire Double Iridium Spark Plug - Single

Q: what is the gap preset on these spark plugs in inches?

Most Bosch Spark Plugs are factory pre-gapped for popular vehicle applications. The gap measurements are indicated either on the box, or by the part number located on the spark plug shell. X suffix = .044" Y suffix = .060" Z suffix = .080". However, it must be noted that wire-tip or needle-tip plugs can afford to have larger gaps as the spark occurs at a lower voltage if one end is pointed, leading to a wider spark and better combustion of the fuel-air mixture. Gaps should never be adjusted on the OE-Fine Wire-tipped plugs - should never be gapped by the installer. Attempts to do so might damage the plug/the delicate tip. What is more important is all the plugs should have equal gaps, or there might be engine knocking and vibrations.

Q: Will this work for Lawnmower ?

Only if your lawn mower has a 2.2L 4 cylinder engine.

Q: Will this work for honda crv 2016?

Bosch 9603 does not fit the 2016 Honda CR-V. The correct Bosch spark plug for this application is 96310. Thank you for your question.

4.6/5

Product ID: 275935482

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Details

Brand
BOSCH
Core material
Iridium
Gap size
0.6
Thread size
1.25mm
Top material type
Nickel

⏳4X longer lifespan

⚡24% less voltage needed

🔩Corrosion-resistant nickel threads

Frequently Bought Together

BOSCH 9603 OE Fine Wire Double Iridium Spark Plug - Single

BOSCH 9603 OE Fine Wire Double Iridium Spark Plug - Pack of 4

FEL-PRO VS 50530 R Engine Valve Cover Gasket Set for Toyota Camry

Description

⚡ Spark your engine’s potential with Bosch’s double iridium power!

IGNITE WITH PRECISION - 360° laser-welded ultra-fine iridium wire ensures superior ignitability and engine efficiency.
TRUSTED BY TOP BRANDS - Compatible with a wide range of premium vehicles from Acura to Volvo—drive with confidence.
BUILT TO LAST 4 X LONGER - Double iridium electrodes deliver unmatched durability, reducing replacement frequency and maintenance costs.
EFFORTLESS INSTALLATION - Pre-gapped and corrosion-resistant nickel-plated threads mean no anti-seize needed—install in seconds.
OE GRADE FIT FUNCTION - Meets or exceeds manufacturer specs for seamless compatibility with modern GDI engines.

The Bosch 9603 OE Fine Wire Double Iridium Spark Plug features a 360-degree laser-welded ultra-fine iridium firing pin and ground electrode, delivering 4X longer life and 24% reduced voltage requirements compared to standard plugs. With corrosion-resistant nickel-plated threads and factory pre-gapping, it offers easy installation and OE-level performance for a broad range of modern gasoline engines, including GDI models.

Specifications

Manufacturer	Bosch Automotive
Brand	BOSCH
Model	Spark Plug
Product Dimensions	10.16 x 17.78 x 22.86 cm; 22.68 g
Item model number	9603_1
Exterior	Machined
Manufacturer Part Number	9603
OEM Part Number	9603
Item Weight	22.7 g

Have a Question? See What Others Asked

what is the gap preset on these spark plugs in inches?

Will this work for Lawnmower ?

uses 14MM socket?

Will this work for honda crv 2016?

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