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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BOSCH 9603 OE Fine Wire Double Iridium Spark Plug - Single

Product ID: 100341960

Details

Brand
Bosch
Core material
Iridium
Thread size
1.25mm
Top material type
Nickel
Vehicle service type
Car

⚡4X longer life iridium tech

🔥360° laser weld for ultimate durability

🔧0.6mm ultra-fine wire for max ignitability

A$49

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Description

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

BUILT TO LAST - 360° continuous laser weld fuses corrosion-resistant iridium to base for unmatched durability.
PLUG PLAY SIMPLICITY - Factory pre-gapped with nickel-plated threads—no anti-seize needed for hassle-free installation.
ENGINEERED FOR ENDURANCE - Double iridium electrodes deliver 4X longer service life than standard copper plugs.
PRECISION IGNITION POWER - 0.6mm fine wire firing pin ensures superior ignitability and peak engine performance.
OPTIMIZED FOR MODERN ENGINES - OE-matched spark position perfectly compatible with Gasoline Direct Injection (GDI) technology.

The Bosch 9603 OE Fine Wire Double Iridium Spark Plug features double iridium electrodes for 4X longer life, a 0.6mm ultra-fine wire firing pin for superior ignitability, and a 360° laser weld for enhanced durability. Factory pre-gapped and nickel-plated for easy installation, it’s engineered to optimize performance in modern GDI engines, making it a premium upgrade for lasting engine efficiency.

Specifications

ASIN	B00515NH4K
Automotive Fit Type	Vehicle Specific Fit
Brand	Bosch
Brand Name	Bosch
Compatible with Vehicle Type	Car
Core Material	Iridium
Core material	Iridium
Customer Reviews	4.6 out of 5 stars 836 Reviews
Global Trade Identification Number	00028851010375
Item Highlight	Replaces 6441 6741 51351 900-1414 900-1427 900-1512 924-1414 924-1427 924-1512. OE-grade replacement.
Item Weight	0.05 Pounds
Manufacturer	Bosch
Manufacturer Part Number	9603
Model Number	9603_1
Number of Items	1
OEM Equivalent Part Number	9603
Thread Size	1.25mm
Thread size	1.25mm
Top Material Type	Nickel
Top material type	Nickel
UPC	028851010375
Unit Count	1.0 count
Vehicle service type	Car

Reviews

A**R

Run great

Toyota Sienna 2006

24.09.2018

B**D

Very nice

Nice product

26.06.2022

C**A

Reliable Bosch Spark Plugs

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

Q**Q

Good performance and better gas mileage.

The plugs I received were made in Germany. The plugs are almost half the cost of Denso and they perform just as well. I would recommend these plugs.

1.10.2025

S**K

9.10.2025

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A$49

Duties & taxes included

In stock

Sold byAmazon AustraliaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Australia.

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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