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⚡ Spark your engine’s potential with Bosch Double Iridium – performance that lasts and impresses!
Bosch 9603 OE Double Iridium Spark Plug features ultra-fine iridium electrodes and nickel-plated threads for 4X longer life, 24% reduced voltage requirements, and corrosion resistance. Factory pre-gapped and OE-matched for modern gasoline engines including GDI, it delivers reliable, high-performance ignition with easy installation.
| ASIN | B00515NH4K |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #149,660 in Automotive ( See Top 100 in Automotive ) #994 in Automotive Replacement Spark Plugs |
| Brand Name | Bosch |
| Compatible with Vehicle Type | Car |
| Core Material | Iridium |
| Customer Reviews | 4.6 4.6 out of 5 stars (878) |
| Global Trade Identification Number | 00028851010375 |
| Included Components | spark plug |
| Item Type Name | Spark Plug |
| Item Weight | 22.68 g |
| 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 Count |
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!
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.
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.
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!
L**A
Justo lo que pedi
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
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.
F**N
Great
Thank You
A**R
Toyota Sienna 2006
B**D
Nice product
S**K
Ok
W**?
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**.
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
1 week ago
2 months ago