Advance Auto Parts Logo
Choose a Store
  • Shop All
  • Replacement Parts
  • Performance Parts
  • Accessories
  • Oil & Fluids
  • Special Offers
  • Advance Rewards
  • Advice & How-Tos
  • Project Guides
  • FAQ / Help Desk
Loading...
Share
Product thumb
Product thumb
Product thumb
Product thumb
Product main large

CRC Belt Conditioner For All Belts, Keeps belts functioning smoothly, 7.5oz

(45 reviews)
Part # 05350
30 day replacement if defective
Loading...
How Would You Like To Get This Item?

Store Pickup

Loading...Loading...Loading...

Same Day Home Delivery

Loading...Loading...Loading...

Home Delivery

Loading...Loading...Loading...
Loading...
Loading...
Loading...Loading...Loading...Loading...Loading...

Product Information

Product Details
Part No. 05350
Warranty Details (30 DAY REPLACEMENT IF DEFECTIVE)
Eliminates squeaks and prolongs belt life. For use on all types of belts, such as serpentine, flat and v-type belts. Prevents slippage and glazing. Removes oil, grease and glaze. Use every 3,000 miles to prevent drying out and slippage.

Product Features:
  • Prolongs belt life
  • Eliminates squeaks
  • Use every 3,000 miles
Specifications
Container Type:
Aerosol

Spray:
Yes
Loading...
Loading...Loading...Loading...Loading...Loading...
3.47 out of 5
45 Customer Reviews
63% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
22
4 Stars
5
3 Stars
3
2 Stars
2
1 Star
13
Pros
8
Easy To Use
3
Reliable
2
(null)
1
None
1
It works
Cons
29
No
2
None
1
Negative
1
Didn't Do The Job
1
Belt Squeals Louder
Most Liked Positive Review
Does the job well !
This product worked very well in restoring an older, somewhat worn and slipping, self-propelled lawn mower drive belt. There is no adjustment provided for tightening the aging drive belt. Before using the conditioner, I first lightly deglazed the "V" surfaces of the belt with medium steel wool (emery or fine sandpaper should also do the job, before spraying several times (allowing each application to absorb into the belt). The belt no longer slips and seems a lot more pliable. My goal in using this product was to give added service life to an expensive, special order belt, that would have required an involved replacement procedure. If the belt lasts even another season or so, I would be very pleased.
Most Liked Negative Review
I wouldnt buy this product again
I used this on my Belts and a few weeks later.. I needed a new engine. My engine only had 62,000 miles in it with regular oil changes and service.
Reviewed by 45 Customers
I wouldnt buy this product again
I used this on my Belts and a few weeks later.. I needed a new engine. My engine only had 62,000 miles in it with regular oil changes and service.
Does the job well !
Verified Buyer -
This product worked very well in restoring an older, somewhat worn and slipping, self-propelled lawn mower drive belt. There is no adjustment provided for tightening the aging drive belt. Before using the conditioner, I first lightly deglazed the "V" surfaces of the belt with medium steel wool (emery or fine sandpaper should also do the job, before spraying several times (allowing each application to absorb into the belt). The belt no longer slips and seems a lot more pliable. My goal in using this product was to give added service life to an expensive, special order belt, that would have required an involved replacement procedure. If the belt lasts even another season or so, I would be very pleased.
Bottom Line Yes, I would recommend to a friend
Worked perfectly
Used this on a 1999 Nissan Maxima. I put new belts on this car about a year ago. The main belt has been squeaking on start-up on and off since. Tightening the belt would work but I was nervous about over-tightening. This car has had a very slow oil leak for years and I think the belt has been getting contaminated. This CRC Belt Conditioner worked perfectly. It made the belt tacky and completely eliminated the squeaking/chirping at startup. Also you get a lot of conditioner (7.5 oz) for a low price which is great. I have been working on cars for more than 20 years and feel good about this product.
Bottom Line Yes, I would recommend to a friend
Great if you know how to use it.
Not for mental [*] like the two guys that give bad review. I bet that they just press the spray and keeped spraying until the whole thing just get ultra wet.
Bottom Line Yes, I would recommend to a friend
Works. It did silent the belt!
I cant use it with can upside - down. It makes it a bit difficult to apply in a tight spaces. Otherwise it is good product.
Bottom Line Yes, I would recommend to a friend
Displaying Reviews 1 - 5Back to Top
Loading...
Loading...Loading...Loading...Loading...Loading...
No results
Loading...
Loading...Loading...Loading...Loading...Loading...
Feedback
Be The First To Know About Deals And Promotions.
Plus, create an account to receive $5 off of $20 or more.
TOP REPLACEMENT PARTS
Brake Pads & Shoes
Brake Rotors
Alternators
Water Pumps
Starters
Brake Calipers

Order Lookup

Help Desk

Store Locator

In Store Services

Mobile App

CUSTOMER SUPPORT
Accessibility Statement
Contact Us
Forgot Password
Help Desk
In Store Pickup
In Store Services
Order Tracking
Recall Information
Return Policy
Same Day Delivery
© 2026 Advance Auto Parts
Privacy Policy
Terms of Use
Site Map
ADVANCING A WORLD IN MOTION®