Product Reviews1pc Spark Plug Non-fouler 18mm Thread Dorman 42009 Fast

Get rid of that check engine light

After installing high-flow cats check engine light came on. Instead of getting a costly tune decided to try these which did the trick, more than 5,000 miles and no issues.

Verified purchase:  Yes | Condition: new | Sold by: rockarch

Works great

Due to space I could only use one for the O2 sensor to fit, but the P0420 has not returned and now I have one for the other side when the P0430 code starts happening.

Verified purchase:  Yes | Condition: new | Sold by: re_mind_sales

My o2 Yukon Denali code 420 fix

Worked like a charm. Drilled it out with a 1/2in bit. Then installed cleared code and haven't seen it since. Magic fix

Verified purchase:  Yes | Condition: new | Sold by: katty-household...

Great

Used to move o2 sensor and worked great!

Verified purchase:  Yes | Condition: new | Sold by: best-deals-onli...

Excellent

Great Deal

Verified purchase:  Yes | Condition: new | Sold by: rockarch

worked perfect

very good quality

Verified purchase:  Yes | Condition: new | Sold by: re_mind_sales

Very good l like this item

Thanks

Verified purchase:  Yes | Condition: new | Sold by: parts_link

Niccce

Worked like a charm

Verified purchase:  Yes | Condition: new | Sold by: parts_link

Extension adapter

I used them for an extension on O2 sensors works great

Verified purchase:  Yes | Condition: new | Sold by: 4vlodke

This item fixes the check engine light , if modified correctly.

Verified purchase:  Yes | Condition: new | Sold by: shawn566