T
Ted R.Verified Buyer
02/03/2025
Works perfectly
Setup was simple and it has worked reliably since day one.
DuralastDuralast Serpentine Belt 637K6
$41.49
FREE delivery · Delivery by Oct 18
- Free shipping over $25
- Next-business-day ship
- Easy returns
Guides & Resources
Product guides for this item are not available online yet. Contact us if you need documentation.
Shipping Information
Free shipping on orders over $25. Most items ship next business day after your order is placed.
Returns Policy
Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.
Product facts
About This Item
- Drive your engine accessories efficiently with the 6-rib design of this serpentine belt
- Keep your engine running smoothly through reliable power transmission
- Count on dependable performance from the trusted Duralast brand
- Enjoy peace of mind with a 12 months warranty included with your purchase
- Maintain proper accessory operation with this precision-engineered serpentine belt
Details
Product Description
Get reliable performance and power transmission with the Duralast Serpentine Belt 637K6. This essential serpentine belt helps keep your engine accessories running smoothly by driving components with precision. Designed with a 6-rib configuration, it delivers efficient operation for everyday driving needs. You can count on dependable quality backed by a 12 months warranty to keep you moving forward with confidence.
Technical data
Product Specifications
- Part #
- 637K6
- SKU #
- 1707866
- Rib Quantity
- 6
- Color
- Black
- Cross Section Designation
- K
- Type
- Standard
- Grade Type
- Standard Replacement
- Effective Length
- 63.7 in
Brand
Brand Story
Replacement parts
Parts
Duralast
Batteries, brakes, and belts in the Duralast line
Duralast is a replacement-parts brand covering batteries, brake parts, belts, and rotating electrical. District Mailing Auto carries selected Duralast items from that lineup.
Shop DuralastLineup
Under-car and under-hood
The brand covers batteries, brake parts, belts, and rotating electrical.
Application
Belts and brakes
Typical jobs include serpentine belts and disc-brake service.
Storefront
At District Mailing Auto
Shop the Duralast products currently in the catalog.
Customer Reviews
4.9
Based on 19 reviews
P
Pat M.Verified Buyer
11/28/2025
Better than expected
Reliable product and smooth buying experience on this site.
C
Chris W.Verified Buyer
07/05/2025
Highly recommend
Good experience overall from checkout to delivery.
J
Jordan L.Verified Buyer
04/15/2025
Very happy with this
Packaging was secure and the item was in perfect condition.
E
Emma S.Verified Buyer
12/14/2025
Exactly what I needed
Easy to order and arrived quickly. Product matched the listing and works great.
D
Dana H.Verified Buyer
10/02/2025
Solid purchase
Quality feels premium and it fits my needs well.
A
Alex P.Verified Buyer
01/09/2025
Fast shipping too
Impressed with the quality for the price. Will be back for more.
S
Sam T.Verified Buyer
03/22/2025
Great quality
Exactly as described. Good value and I would order again.
R
Riley N.Verified Buyer
06/08/2025
No complaints
Quick delivery and the product exceeded my expectations.
M
Maria K.Verified Buyer
08/17/2025
Would buy again
Does what it is supposed to do. Happy with this purchase.
T
Ted R.Verified Buyer
02/03/2025
Works perfectly
Setup was simple and it has worked reliably since day one.
P
Pat M.Verified Buyer
11/28/2025
Better than expected
Reliable product and smooth buying experience on this site.
C
Chris W.Verified Buyer
07/05/2025
Highly recommend
Good experience overall from checkout to delivery.
J
Jordan L.Verified Buyer
04/15/2025
Very happy with this
Packaging was secure and the item was in perfect condition.
E
Emma S.Verified Buyer
12/14/2025
Exactly what I needed
Easy to order and arrived quickly. Product matched the listing and works great.
D
Dana H.Verified Buyer
10/02/2025
Solid purchase
Quality feels premium and it fits my needs well.
A
Alex P.Verified Buyer
01/09/2025
Fast shipping too
Impressed with the quality for the price. Will be back for more.
S
Sam T.Verified Buyer
03/22/2025
Great quality
Exactly as described. Good value and I would order again.
R
Riley N.Verified Buyer
06/08/2025
No complaints
Quick delivery and the product exceeded my expectations.