How do I confirm pilotpart521171-9128086929656 fits my machine?

Compare the OEM or reference part number, machine model, engine model, and serial number. You can also submit a fitment inquiry before ordering.

In Stock

Idler Pulley 1731498for Caterpillar CAT Loader 973D 938G II Excavator 345B 345B II 5090B Telehandler TH220B TH330B

For Caterpillar Idler Pulley

Idler Pulley CA1731498 for Caterpillar

OEM / REF: CA1731498SKU: pilotpart521171-9128086929656

Idler Pulley 1731498for Caterpillar CAT Loader 973D 938G II Excavator 345B 345B II 5090B Telehandler TH220B TH330B is a Idler Pulley replacement part for Caterpillar Transmission & Undercarriage Parts, categorized under Transmission & Undercarriage Parts > Idler Pulley. Use OEM part number CA1731498 and confirm mach...

Stock: In stock
Condition: New
Fitment: Caterpillar Transmission & Undercarriage Parts
Category: Idler Pulley

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$45.00USD/EA

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 24 – Oct 31
10	Oct 22 – Oct 29
50	Oct 20 – Oct 27

Estimates from today; confirm exact lead time before payment.

Quantity

Buy online now or add to your quote list for bulk pricing and fitment confirmation.

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Lead times can vary by freight route and customs. Contact support for expedited shipping.

Idler Pulley Description

This Idler Pulley is indexed for CAT Fit For Caterpillar Articulated Dump Truck: 725, 730 Fit For Caterpillar Challenger: MT735, MT745, MT755, MT765, MT835, MT845, MT855, MT865, MTC735, MTC745, MTC755, MTC765, MTC835, MTC845, MTC855, MTC865 Fit For Caterpilar Excavator: 345B, 345B II, 345B L, 365B, 365B II, 365B L, 385B, W345B II, 5090B Fit For Caterpilar Forest Product: 2748, 2948, 584, 584HD Fit For Caterpilar Integrated Toolcarrier: IT38G II, IT38H, IT62G II, IT62H Fit For Caterpilar Motor Grader: 120H, 12H, 135H, 140H, 143H, 14H, 160H, 163H, 16H Fit For Caterpilar Petroleum Product: C15, C7, TH35-C15I, TH35-E81 Fit For Caterpilar Pipelayer: PL61 Fit For Caterpilar Telehandler: TH220B, TH330B Fit For Caterpilar Loader: 973D, 938G II, 938H, 950G II Fit For Caterpilar Tractorl: D6K LGP, D6K XL, D6N, D9T. Compare reference number CA1731498 against the label on your existing Caterpillar component before ordering.

Additional cross references on file: 173-1498. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

CA1731498 173-1498

Applications

CAT Fit For Caterpillar Articulated Dump Truck: 725, 730 Fit For Caterpillar Challenger: MT735, MT745, MT755, MT765, MT835, MT845, MT855, MT865, MTC735, MTC745, MTC755, MTC765, MTC835, MTC845, MTC855, MTC865 Fit For Caterpilar Excavator: 345B, 345B II, 345B L, 365B, 365B II, 365B L, 385B, W345B II, 5090B Fit For Caterpilar Forest Product: 2748, 2948, 584, 584HD Fit For Caterpilar Integrated Toolcarrier: IT38G II, IT38H, IT62G II, IT62H Fit For Caterpilar Motor Grader: 120H, 12H, 135H, 140H, 143H, 14H, 160H, 163H, 16H Fit For Caterpilar Petroleum Product: C15, C7, TH35-C15I, TH35-E81 Fit For Caterpilar Pipelayer: PL61 Fit For Caterpilar Telehandler: TH220B, TH330B Fit For Caterpilar Loader: 973D, 938G II, 938H, 950G II Fit For Caterpilar Tractorl: D6K LGP, D6K XL, D6N, D9T

Fitment Notes

Brand or application signal: Caterpillar Transmission & Undercarriage Parts
Product family: Idler Pulley
System category: Transmission & Undercarriage Parts > Transmission Parts > Idler Pulley
Recommended verification: OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability: InStock
Shipping: Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns: Returns are easier when fitment is confirmed before ordering.
B2B support: Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.