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Features & Product Details
RallySport Direct proudly carries a great variety of Denso Spark Plugs to keep the maintenance up on your vehicle, or to accommodate certain modifications you may have performed.
Here, you are looking at the Denso Iridium Spark Plug. This spark plug features patented Iridium alloys that are combined with the latest in spark plug technology to provide your vehicle with optimal performance and long life.
RallySport Guarantee - 30 Days
Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.
RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.
The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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REVIEWS & CUSTOMER MEDIA
Good problems no need to blame on the product because it is a pain to install the plugs on Subaru vehicles. These are great replacement for stock plugs that cant handle all the power adder mods.
Plugs simply didn't give enough fire to start my car. I was very disappointed. Switched to stick NGK plugs and started right up. Was a huge hassle because STi engines are a pain in the ass to change the plugs on.
Big difference on the response, especially when paired with my okada plasma direct coils, a must have for your sti or wrx and you can get the coils from RSD. RSD once again the BEST!!!
Must change, feel the difference, no more shaking.
U thinks these spark plugs are way better than any ive used before. I defenatly felt the power gain but will be much better with a tune. I strongly recommend these. Thanks guys
QUESTIONS & ANSWERS
Q: Gap Size? Synapse3 months agoI have found conflicting info -- some sources say to use the stock spark plug gap size of 0.028in / 0.7mm, others recommend that you do not ever gap iridium spark plugs. Any ideas?
0 of 0 people found the following answer helpful
A: It is not ideal to gap iridium spark plugs, as it risks damaging the spark plug's electrode. These will be pre-gapped at .032.Brady R @ RallySport Direct 2 months ago
- 0 of 0 people found the following answer helpful
Q: Plug Heat Range Ozpic5 years agoWhy one step colder ? this is an issue that has always confused me as people I have spoken to seem to have a different take on the subject,so if some one can clear this up without getting to technical I sure would appreciate it.
2 of 2 people found the following answer helpful
A: The idea is to go one step colder per 75-100HP you add. This helps prevent predetonation and knock.guest56ad69792a8d256e198b66b5 @
- 2 of 2 people found the following answer helpful