Free shipping on select products
Eligible product listings identify items with free shipping; the product pages state the lower 48 states are covered.
See terms & exclusions
Free shipping only applies to the lower 48 states.
We confirm every code and deal on this page on Redline360's own pages and in posts about it, and each says when. 4 of 4 still work — the rest are listed below with the date they stopped.
Eligible product listings identify items with free shipping; the product pages state the lower 48 states are covered.
Free shipping only applies to the lower 48 states.
The bottle is included with a radiator purchase; the page does not state further eligibility details.
With purchase.
Redline360 customers must contact the store first to receive a referral and discount code for a remote E-Tune package.
The listed prices are already reduced; the page does not state a discount amount.
Three “didn’t work” reports drop a code out of the top slot automatically. Deals are reported too, but only a code can be dropped.

A widely reviewed quick release for swapping 6-bolt steering wheels.
See it on Redline360
Sport springs that lower the stance of a Charger or Challenger.
See it on Redline360
A high-flow E85 sensor for running flex fuel in a modified car.
See it on Redline360
An Alcantara shift boot that finishes a Civic's interior in black or red.
See it on Redline360Our estimate of when Redline360's biggest discounts of the year happen, month by month. November is the month to wait for.
Start with the one verified most recently, not the biggest number.
Open the cart page using the cart icon, then proceed to checkout. The promo code field is on the checkout page, not in the cart.
On the checkout page, type your copied code into the promo code field. Press the apply button.
If Redline360 shows "Enter a valid discount code or gift card", the code did not work — tell us, and a code shoppers report as failing moves to the bottom of the list.
The post-Thanksgiving kickoff sale, the biggest discount event of the year for auto parts.
The online-focused follow-up sale to Black Friday.
A December gift-and-gear sale running through Christmas.
A January clearance-style sale to start the new year.
4 questions people actually ask us.
Redline360 covers all shipping costs to retrieve the incorrect item and exchange it for the correct one. If the wrong part was caused by a wrong part number or incorrect website information, Redline360 also covers the cost to return it and will ship the correct part or issue a full refund.
You must open a damage claim with the shipping carrier, and Redline360 will cooperate with the claim. Items returned to Redline360 in damaged condition cannot be accepted.
Installation at the Concord, CA partner shop carries a 24-month or 24,000-mile warranty on all labor. Only emissions-legal items can be installed, and body work such as lips, spoilers and wings is not done.
Report it within 30 days of the expected delivery date. Redline360 will open a carrier claim, which typically takes 2 to 3 weeks, and you must respond to the carrier if it contacts you or the claim may be denied.
Redline360 and the Redline360 logo are trademarks of their owner, shown here solely to identify the store and its offers. Couponly is an independent service and is not affiliated with, endorsed by, or sponsored by Redline360. We may earn a commission when you shop through our links. See our Terms.