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.

Will this work for Lawnmower ?

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

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.

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.

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Description

⚡ Ignite your drive with Bosch’s double iridium spark—where precision meets endurance!

BUILT TO WITHSTAND - 360° continuous laser weld fuses corrosion-resistant iridium for rock-solid durability under pressure.
PLUG PLAY SIMPLICITY - Factory pre-gapped and nickel-plated threads mean effortless installation—no anti-seize needed.
ENDURANCE THAT OUTLASTS - Double iridium electrodes deliver 4X longer lifespan, keeping your ride smooth mile after mile.
PRECISION IGNITION POWER - Ultra-fine 0.6mm iridium wire ensures lightning-fast spark and peak engine performance.
GDI OPTIMIZED COMPATIBILITY - OE-matched spark position designed for modern Gasoline Direct Injection engines, maximizing efficiency.

The Bosch 9603 OE Fine Wire Double Iridium Spark Plug features a 0.6mm ultra-fine iridium firing pin and ground electrode inlay, delivering 4X longer service life than standard copper plugs. Its 360° continuous laser weld ensures exceptional durability and corrosion resistance. Factory pre-gapped with nickel-plated threads, it offers easy installation and is optimized for Gasoline Direct Injection engines, making it a premium choice for enhanced engine performance and longevity.

Specifications

ASIN	B00515NH4K
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	731,589 in Automotive ( See Top 100 in Automotive ) 2,679 in Car Spark Plugs
Brand Name	Bosch
Compatible with Vehicle Type	Car
Core Material	Iridium
Customer Reviews	4.6 4.6 out of 5 stars (830)
Global Trade Identification Number	00028851010375
Item Weight	23 g
Manufacturer	Bosch
Manufacturer Part Number	9603
Model Number	9603_1
OEM Equivalent Part Number	9603
Thread Size	1.25mm
Top Material Type	Nickel
UPC	028851010375
Unit Count	1.0 count

Reviews

A**R

Toyota Sienna 2006

24.09.2018

B**D

Nice product

26.06.2022

C**A

High-quality spark plugs that fit perfectly and work as expected. Engine runs smoother and starts easily. Durable and dependable — Bosch never disappoints. Great value for maintenance or replacement!

12.02.2026

S**N

I got these for my 2002 GS430 and boy do they help get all the power out of my engine. I have an exhaust leak and trans leak that leads to a laggy bogged down performance, but by swapping out with these plugs yearly I can keep the power more responsive. I tried other plugs, but these seem to do the best for me in my case. Installation was straight forward and these tightened in place great with a little bit of antiseize.

4.03.2024

S**K

9.10.2025

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