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⚡ Ignite your ride with BOSCH’s elite spark power!
The BOSCH HR8LII33U spark plug features a fine wire iridium core for enhanced ignition efficiency and durability. Sold in an 8-pack, it offers universal RM thread compatibility for recreational vehicles, combined with a ceramic top for heat resistance. Engineered to meet original equipment standards, this spark plug ensures reliable performance and long-lasting vehicle maintenance.
| ASIN | B01JBDL2KI |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #30,586 in Automotive ( See Top 100 in Automotive ) #204 in Automotive Replacement Spark Plugs |
| Brand | Bosch |
| Brand Name | Bosch |
| Compatible with Vehicle Type | Car, Truck |
| Core Material | Iridium |
| Customer Reviews | 4.7 out of 5 stars 602 Reviews |
| Included Components | 9602 |
| Item Weight | 0.8 Pounds |
| Manufacturer | Bosch |
| Manufacturer Part Number | 9602 |
| Manufacturer Warranty Description | Includes manufacturer provided warranty |
| Model Number | 9602 |
| Number of Items | 8 |
| Thread Size | RM |
| Top Material Type | Ceramic |
| UPC | 028851810043 |
| Unit Count | 8.0 Count |
| Vehicle Service Type | Car, Truck |
S**N
Awesome plugs. I highly recommend!
Phenomenal - worked great
P**N
Made motor run way better
Cheap and great. Motor ran like never before after these
T**E
Great product at a good price
Great quality good price
J**.
Genuine parts
Genuine parts I will keep ordering these spark plugs
A**R
Bosch spark plugs for 2004 chevy silverado 2500hd
Works great
M**N
Good Stuff
Great product just as good as OE with a great price !
A**R
Amazon recommendation wrong for 2014, 5.3 and later.
I was lazy and didn’t verify that Amazon’s recommendation was correct. This part is intended for pre 2014 (LT) engines. This spark plug has a shorter thread.
J**G
When you want the best
Many years ago I bought a 2000 GMC 2500 Sierra 4X4, used. Even now it only has about 170 K original miles on it, new tires and is in otherwise beautiful condition with everything working. Even the engine runs smoothly, however I had a pronounced roughness at idle. I have no idea when the plugs were last changed, but on taking them out, I now believe that they are the original (iridium or platinum) plugs because I've never, ever seen plugs so utterly worn out. I was going to buy the cheapest plugs I could find since the truck is so old and I don't know how long I'll be driving it. Then I decided that I didn't want to worry about it, so I bought the best plugs I could for the old gal. I am rather amazed at how utterly smooth the engine now idles and I will be checking if the (gas hog) gas mileage improves too.
R**.
Great product!
These work well in a 2004 GMC Sierra 5.3 SLE , Engine runs quiet and smooth
D**.
Good fit.
Excellent.
J**A
Excellent product
Improved my engine's performance drastically. Much better gass mileage. Bitch to install on one side.
A**R
Instant increase in milage
My '07 silverado has 260k on it and was not dropping into V4 mode and was sliding on the L/100. First drive after these were in was great, the V4 mode was on most of the time I was in cruise and the readout was hanging around 11 instead of 14L/100. After these ones hit the end of the road, I'll get them again.
S**E
Tres bonne performance bravo
Bonne performance
Trustpilot
2 weeks ago
2 days ago