Overall Rating
4.4 out of 5
4.4 out of 5
Open Ratings Snapshot
Rating breakdown 19 reviews
5 Stars
10
4 Stars
6
3 Stars
3
2 Stars
0
1 Star
0
Ease of Use/Installation
3 out of 5
3 out of 5
Quality/Construction
4 out of 5
4 out of 5
16 of 19(84%)reviewers would recommend this product to a friend.
Product ReviewsWrite a review
Overall Rating
5 out of 5
5 out of 5
They work
March 18, 2011
Anonymous
Location: Iowa
How often do you shop at JC Whitney.com? First Time
"I installed on my wifes 1999 Bonneville along with Accel coil packs and OEM Delco Iridium plugs. The engine runs smoother accelerates quicker, also has a whine to it almost sounding like a SC 3.8. Mileage has improved by 2 to 3 MPG. Now getting 430+ on 1 tank, and I'm not gentle on this car."
Pros: More power and MPG
Cons: Need color variations, dont recmnd E3 plugs.
+6points
8out of 10found this review helpful.
Was this helpful?helpful8unhelpful2
Overall Rating
5 out of 5
5 out of 5
MPGs
December 19, 2009
Anonymous
Location: NJ
How often do you shop at JC Whitney.com? Multiple Times a Year
"I put these in my 1995 Jeep Cherokee Sport. Before installation I was getting 13-14MPG. Now I get 18MGP around town and have gotten 21MPG on HWY. I will put a set of these in all of my vehicles."
Pros: Easy to install, does what it says
+18points
20out of 22found this review helpful.
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Overall Rating
4 out of 5
4 out of 5
stoped the knock
February 26, 2009
Mainer
Location: Windsor Maine
How often do you shop at JC Whitney.com? Multiple Times a Year
"99 Silverado 5.3 ltr 99,000 miles, no fault codes, started kicking/bucking under loads after warm up and computer went into open loop operation. Changed plugs no help. Cleaned air intake, filter, airflow sensor, ran seafoam - no change. After installing new wires everything cleared up, although I see no increase in mileage."
Pros: easy install
Cons: price
+9points
11out of 13found this review helpful.
Was this helpful?helpful11unhelpful2
Overall Rating
5 out of 5
5 out of 5
good chioch
February 12, 2009
bushhog
"good on gas mileage and on price."
Pros: better gas mileage and best purchase ever
Cons: I don't have anything bad to say about the part
0points
3out of 6found this review helpful.
Was this helpful?helpful3unhelpful3