Drive & Alternator Belt Set 6726898 6675837 – Verified Fitment for Bobcat 753

Verified Cross-Reference — Bobcat loader belt set 6726898 and 6675837 (cross-reference only) checked against serial ranges for 753 through T190 before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Can Still Misfit Your Loader

Cross-reference verification against your machine serial number is the only reliable way to confirm a Drive & Alternator Belt Set for Bobcat 753 763 773 S150 T190 will seat correctly on your pulleys.

Belt part numbers get superseded across loader generations without clear documentation. A base number may cover several models, but the actual belt length or rib profile shifts between early and late production runs. I have seen S150 loaders from early serial ranges reject a belt that fits a later T190 without issue — the pulley groove depth changed mid-production, and a universal-fit belt rides too high, slipping under load until it glazes and burns. [NEED_CITE: belt slippage failure modes in compact loader drive systems]

Ordering by model name alone leaves fitment to chance. Cross-reference tables copied between sellers often carry forward errors from superseded numbers, compounding the problem. The only safe path is submitting your serial number or a photograph of your existing belt markings so the exact variant is confirmed before anything ships.

Serial Range Coverage Across the 753–T190 Lineup

The Bobcat 753, 763, 773, S150, S160, S175, S185, T180, and T190 span multiple engine platforms and production years. A Drive & Alternator Belt Set for Bobcat 753 763 773 S150 T190 must be matched not just to the model badge but to the engine build code stamped on the block. The same loader model may have received different engines across its production run, and each engine variant uses a specific belt length and tension specification. We confirm the correct set by cross-checking your serial number against known build configurations, catching mismatches that a generic listing would miss.

Pulley Groove, Rib Profile, and Tensioner Interface

The physical interface between belt and pulley determines whether a replacement will hold tension or slip within hours. Groove depth on drive pulleys shifted across certain Bobcat loader generations, meaning two belts with the same nominal part number can behave differently under load. [NEED_CITE: V-belt and multi-rib belt groove profile standards for industrial engines] The alternator belt must also match the pulley diameter and rib count of the specific alternator installed — higher-output alternators on S175 and S185 models sometimes use a wider belt than the base configuration. Before dispatch, we verify belt width, rib profile, and effective length against the tensioner travel range for your specific engine build.

Reading the Specs That Actually Matter for Belt Fitment

Belt length and width are the primary dimensions, but effective length — measured along the pitch line, not the outer edge — is what determines whether the tensioner can take up slack. A belt that is nominally correct but sits at the wrong pitch depth will either overtighten, loading the alternator bearing prematurely, or run loose enough to flutter and wear the rib faces. Rubber compound and cord material determine heat resistance and flex fatigue life; this Drive & Alternator Belt Set for Bobcat 753 763 773 S150 T190 uses ISO-standard compounds rated for the under-hood temperatures typical of compact loader engine bays. Tensile cord construction affects how well the belt resists stretch over its service life — a belt that elongates beyond the tensioner's adjustment range will require re-tensioning far sooner than expected.

The Real Cost of a Belt That Almost Fits

A belt that seats but rides at the wrong depth in the pulley groove will slip under peak torque demand — typically when the loader is pushing into a pile or lifting a full bucket. The slip generates heat, glazes the belt surface, and accelerates wear on the pulley faces themselves. [NEED_CITE: premature belt wear caused by incorrect groove engagement in mobile equipment] In a worst-case scenario, a glazed drive belt loses enough grip to let the hydraulic pump stall mid-cycle, leaving the operator stranded with a loaded bucket raised. The alternator belt, if mismatched, can cause undercharging that drains the battery over successive shifts, producing electrical faults that take far longer to diagnose than a belt swap would have required.

Why Buyers Source This Belt Set Through XUNPO

Own production on selected lines and qualified sourced supply both carry the same QC protocol and warranty terms, so a belt set ordered here arrives backed by consistent inspection standards. Eight product categories under one account means a buyer replacing belts can add filters, seals, and tensioner components to the same consignment without managing separate suppliers. Minimum order of one piece supports a single emergency replacement or a sample trial before a distributor commits to bulk inventory. Our technical team confirms fitment from a machine model, serial number, worn belt photograph, or nameplate image — whichever identifier the buyer has available. Cross-reference verification covers superseded and alternate numbers, catching the variant differences that copied tables miss. Sample units ship for physical fitment trials when certainty is required before a larger order.

Documentation & Verification

• Commercial invoice and packing list with belt set part numbers and cross-reference designations
• Compatibility sheet listing verified Bobcat model and serial range coverage (reference only)
• Dimensional inspection record covering belt length, width, and rib profile before dispatch
• Warranty terms document specifying coverage period against manufacturing defects
• Packing photographs showing belt set condition and labeling prior to crate closure
• HS code and customs documentation support for international belt shipments

Fitment Check Before Installation

• Compare new belt effective length and rib count against the removed belt or service manual specification
• Inspect pulley grooves for wear, glazing, or debris that could affect new belt seating
• Route the drive belt first, then the alternator belt, confirming each sits flush in its groove without riding above the pulley rim
• Check tensioner travel range — if the tensioner is already at maximum extension, the belt or tensioner may need replacement together
• Run the engine at idle for several minutes, then re-check belt alignment and tension after initial seating
• Report any mismatch immediately with photographs of the belt on the pulley for resolution before further use

Inquiries for Fitment Confirmation

Provide your Bobcat loader model and serial number, or a photograph of the existing belt markings and machine nameplate. Our team will cross-reference the drive and alternator belt numbers against your specific engine build and return a confirmed fitment verdict before any order is placed.

Frequently Asked Questions

Q: How do I confirm these belts fit my specific Bobcat loader serial number? A: Send us your machine serial number or a clear photograph of the nameplate. We cross-reference the Drive & Alternator Belt Set for Bobcat 753 763 773 S150 T190 against known engine build codes for that serial range, checking belt length and rib profile against the specific pulley and tensioner configuration your loader left the factory with.

Q: My old belt has a different part number — is 6726898 or 6675837 the correct replacement? A: Belt numbers are frequently superseded across production runs. Submit the number printed on your old belt along with your machine model. We verify whether 6726898 or 6675837 (cross-reference only) is the current valid replacement, or whether a different variant is required for your specific build.

Q: Why do some Bobcat models share the same base belt number but require different variants? A: Bobcat updated engine platforms and pulley designs across loader generations while retaining some base part numbers. Groove depth, belt length, and rib profile can shift between early and late serial ranges of the same model. We confirm the exact variant your machine needs based on serial number verification rather than model name alone.

Q: I only have the machine model, no readable part number — can you still identify the right belt? A: Yes. Provide your Bobcat model and, ideally, the serial number or a photo of the engine nameplate. We use build records to determine the correct belt set for your machine's engine configuration, even when the original belt markings are worn away or painted over.

Q: Can I order a sample to test fitment before placing a larger order? A: A single Drive & Alternator Belt Set ships as a sample for physical trial fitment on your machine. Once you confirm the belt seats correctly on your pulleys and the tensioner holds within range, you can proceed with a bulk order for distributor stock or fleet maintenance inventory with confidence.