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Bosch 9621 OE Fine Wire Double Iridium Spark Plugs combine cutting-edge 360° laser welding and ultra-fine iridium electrodes to reduce voltage requirements by 24% and extend spark plug life by 4X. Designed for modern gasoline engines including GDI, these plugs come pre-gapped and feature corrosion-resistant nickel-plated threads for easy installation and long-lasting performance.
| ASIN | B0762GB2TM |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #24,017 in Automotive ( See Top 100 in Automotive ) #152 in Automotive Replacement Spark Plugs |
| Brand | Bosch |
| Brand Name | Bosch |
| Compatible with Vehicle Type | Car, SUV, Truck |
| Core Material | Iridium |
| Customer Reviews | 4.6 out of 5 stars 622 Reviews |
| Gap Size | 0.04 inches |
| Global Trade Identification Number | 00028851034265 |
| Included Components | Spark Plugs |
| Item Type Name | Spark Plugs |
| Manufacturer | Bosch Automotive |
| Manufacturer Part Number | 9621 |
| Manufacturer Warranty Description | Limited |
| Model Number | 9621 |
| Thread Size | 12mm |
| Top Material Type | Iridium |
| UPC | 028851034265 |
| Unit Count | 4 Count |
| Vehicle Service Type | Car, SUV, Truck |
J**.
Very Expensive
Had one cylinder misfiring so replaced coil and spark plug. Runs fine now, but old plug looked shot after only 5 months so I think the coil was the problem. Really good plug so far but very expensive.
D**S
Excelente producto y calidad
Excelente producto, llego a tiempo
L**O
Buy them.
Easy to install, run good.
A**O
Brand new sealed
Perfect product brand new sealed as expected.
A**R
Work as well as the NGK's
Bought for a 2016 Mazda 6, I had NGK's in it for 5 months and had misfires, didnt have the money to throw more NGK's at it for troubleshooting. Bought these to try and they work great so far.
C**Y
Faulty plug? Otherwise great set
Definitely better than the old plugs that probably had 80k miles on them. The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine. Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.
R**R
Near OEM quality at 1/4 cost
Near OEM performance at 25% of the cost! Bosch Quality replaced NGKs/Toyota OEMs. Great value and now the engine is running smoothly! I have seen a slight improvement in my mpg @1mpg overall in mixed driving conditions.
M**.
Preset gap, easily replaced
Looked better than the OEM they replaced on my CX-5
A**Y
Good item
Reliable product as always.car acceleration improved.
A**D
التيما 2021 تركب
ناسبت سيارتي التيما 2021
V**S
Les ceux d'origine chez le concessionnaire sont 64$ chaque
Même qualité que ceux d'origine et le prix beaucoup moins élevé que ceux d'origine
R**B
Seems great so far, 2016 Mazda 3 2.5L
Seem great so far. Installed in a 2016 Mazda 3, 2.5L engine. Noticeably improved low-end torque, like the engine was when it was new. Will report back if I run into any issues.
K**R
works well in 2014 nissan pathfinder sl 3.5l engine
works well in 2014 nissan pathfinder sl 3.5l engine
Trustpilot
4 days ago
1 week ago