Aftermarket Undercarriage Parts for Heavy Equipment
Keep your excavator, dozer, crawler, compact track loader, and other tracked equipment working with dependable aftermarket undercarriage components from Construction Parts PNW. We supply replacement parts for worn or damaged undercarriage systems, including track rollers, carrier rollers, idlers, sprockets, track adjusters, track chains, rails, track shoes, and related hardware.
Undercarriage parts are not always interchangeable by machine model alone. Serial-number breaks, track-chain pitch, link count, mounting dimensions, flange style, and final-drive configuration can all affect fitment. Our team can help verify the correct replacement before you order.
Shop Undercarriage Components
- Bottom Rollers: Single-flange, double-flange, inner-flange, and center-flange track rollers.
- Carrier Rollers: Upper rollers designed to support and guide the track chain.
- Front Idlers: Replacement idler assemblies and idler wheels for proper track alignment.
- Sprockets and Segments: Drive sprockets and bolt-on segments matched to the correct track chain.
- Track Adjusters: Recoil assemblies, adjuster cylinders, yokes, and related components.
- Track Chains and Rails: Sealed and lubricated track-chain assemblies for excavators and dozers.
- Track Shoes and Hardware: Grouser shoes, master links, bolts, nuts, and installation hardware.
- Complete Undercarriage Packages: Component packages quoted for complete machine rebuilds.
Popular Equipment Applications
We source undercarriage components for many common equipment manufacturers, including Caterpillar, John Deere, Komatsu, Hitachi, Kubota, Bobcat, Case, Kobelco, New Holland, Hyundai, Develon, Doosan, JCB, SANY, and other major brands.
Available applications include mini excavators, full-size excavators, crawler dozers, compact track loaders, crawler carriers, and other tracked construction equipment.
What We Need to Confirm Fitment
To help identify the correct undercarriage part, please provide as much of the following information as possible:
- Machine manufacturer and complete model number
- Machine serial number or product identification number
- OEM or casting number from the existing component
- Track-chain link count and shoe width
- Track pitch, when available
- Sprocket tooth count and bolt-hole count
- Photos and measurements of the existing component
Some machines may have non-original undercarriage systems or serial-number-specific configurations. Verifying these details before ordering helps prevent incorrect fitment and unnecessary freight costs.
Undercarriage Parts Support and Shipping
Construction Parts PNW supplies individual replacement components as well as complete undercarriage quotes. Many smaller components can ship by standard parcel service, while rails, idlers, rollers, and complete systems may require freight shipping.
Contact our parts team for availability, lead times, freight estimates, or help matching an undercarriage component to your machine.
Need help finding the correct part? Send us your machine model, serial number, track information, and photos of the current component for fitment assistance.
