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⚡ Spark your engine’s potential with Bosch Double Iridium – performance that lasts and impresses!
Bosch 9603 OE Fine Wire Double Iridium Spark Plug features dual iridium electrodes for superior ignitability and 4X longer life than standard plugs. With 360-degree laser welding and nickel-plated threads, it offers enhanced durability, corrosion resistance, and hassle-free installation. Factory pre-gapped and OE-matched for modern GDI engines, it fits a wide range of premium vehicles, ensuring reliable, high-performance ignition every drive.
| ASIN | B00515NH4K |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #719,363 in Automotive ( See Top 100 in Automotive ) #3,679 in Automotive Replacement Spark Plugs |
| Brand | Bosch |
| Brand Name | Bosch |
| Compatible with Vehicle Type | Car |
| Core Material | Iridium |
| Customer Reviews | 4.6 out of 5 stars 878 Reviews |
| Global Trade Identification Number | 00028851010375 |
| Included Components | spark plug |
| Item Type Name | Spark Plug |
| Item Weight | 0.05 Pounds |
| Manufacturer | Bosch Automotive |
| Manufacturer Part Number | 9603 |
| Manufacturer Warranty Description | Limited |
| Model Number | 9603_1 |
| OEM Equivalent Part Number | 9603 |
| Thread Size | 1.25mm |
| Top Material Type | Nickel |
| UPC | 028851010375 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car |
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!
S**N
Solid, reliable park plugs
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.
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.
L**.
Great Product
Purchased this product for my 2004 Toyota Tundra and so far it is doing the job as intended. My truck now accelerate as it should without any hesitation. It arrived well packaged and gapped. A great replacement at a great price!
J**H
good item
i bought 4 sparks for my friends，because he is not the amazon prime membership，he said it is well for his Camry and more powerfull,just a little expensive. Last year i bought 6 sparks and just costed 23
L**A
Excelente
Justo lo que pedi
A**R
Worth the money
My 2004 Toyota Highlander runs smoother and is a good pick-up. So far so good. Best spark plugs ever bought.
T**M
Great Fit for Lexus RX330 2004
Fast delivery and perfect product fits well on my lexus RX 330 model 2004 , i recommend it to Lexus owners as it lasts for a long time.
A**R
Run great
Toyota Sienna 2006
B**D
Very nice
Nice product
S**K
Ok
Ok
W**?
Use spark plugs? C’mon Amazon
Bought these for my 2003 Thunderbird. All of them were used spark plugs. Useless waste of time. Now I have to return them and go through the pain of re-installing the coil covers and repeating the process all over again.
A**.
Compatibility of products as mentioned.
Details of product’s compatibility specially in accessories & parts is very bad. As these products are only exchangeable it’s a loss of the client. But somehow when I have expressed my issues either the product has been changed or I have been refunded.
Trustpilot
2 weeks ago
1 month ago