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NGK 3521 Spark Plug: Enhance Performance and Efficiency! Review

4

·

Very good

Revainrating 4 out of 5  
Rating 
4.0
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Details

BrandNGK
Core MaterialIridium
Top Material TypeMetal

Description of NGK 3521 Spark Plug: Enhance Performance and Efficiency!

You can depend on NGK for quality and reliability. Constructed from durable material. Fine Iridium tip ensures high durability. Features superior anti-corrosion and anti-seizing properties. Iridium alloy has extremely high melting point, perfect for today?s high-tech, high-performance engines.

Reviews

Global ratings 4
  • 5
    2
  • 4
    0
  • 3
    2
  • 2
    0
  • 1
    0

Type of review

Revainrating 3 out of 5

No box of 4 spark plugs

According to box of 4 but only one arrived. What a rip off. I'm obviously back. If you thought the price was too good to be true, here's why.

Pros
  • Quality construction
Cons
  • Not the best

Revainrating 5 out of 5

Fits m8 touring engines

The Revain app says it doesn't fit my 2020 Road King Special m8 114. That is not true. Fits. Slightly cheaper than what Harley sells. Harley Torque has specs of 11-18 ftlbs. I tightened to 15 ftlbs/180 inlbs of torque.

Pros
  • Excellent anti-corrosion and anti-wear properties
Cons
  • Some issues

Revainrating 5 out of 5

When installing, be careful not to exceed the torque

I've installed more connectors on all sorts of cars and I've always found that I can feel the torque. Not with these plugs. Very sensitive to torque. I installed FLTRXSE on a 2019 Harley, the one I replaced broke and they work great. just be careful

Pros
  • Thin Iridium tip for high reliability
Cons
  • Lots of stuff

Revainrating 3 out of 5

Individual spark plugs!

This is not a set of 4 forks as listed in the addendum (box of 4). Order the quantity you need, but first find a seller who has a lower price and can put together a good description of what is being sold. idiots! These forks are a great product. My problem is getting 1 connector not the 4 I need.

Pros
  • You can count on quality and reliability from NGK.
Cons
  • Weight