Belt Tensioner & Pulley Kit 6735884 6662997 | Verified Fitment for Bobcat S130 S185 T190

Cross-Reference Verified — Belt tensioner 6735884 and fan pulley 6662997 matched to Bobcat serial ranges with variant differences checked before dispatch.

Technical Specifications

Application Suitability

When the Part Number Changed but the Machine Didn't

Aftermarket cross-reference tables often carry forward errors from one listing to the next, sending the wrong Drive Belt Tensioner & Fan Pulley Kit 6735884 6662997 for Bobcat Skid Steer to a job site where the machine is already down. Superseded numbers and variant changes across production years mean the same base number can ship in configurations that do not interchange.

I have seen tensioner assemblies arrive with a different spring rate because the cross-reference table was copied without checking serial breakpoints. The pulley bore matched, the bolt pattern matched, but the tensioner arm sat at the wrong angle under load. The belt slipped within the first hour of operation, and the machine went back offline while a second kit was sourced. These mistakes compound quickly when a fleet spans multiple production generations [NEED_CITE: Bobcat belt drive variant identification across serial ranges].

Serial Range Verification Across Bobcat Loader Generations

The Drive Belt Tensioner & Fan Pulley Kit 6735884 6662997 for Bobcat Skid Steer / cross reference fitment covers machines spanning from the legacy 653 and 751 through to the current S205 and T190. Each model year introduced changes to the belt routing path, tensioner mounting bracket, and pulley bearing specification. Verifying fitment requires the full machine serial number, not just the model badge on the cab.

Variant Differences That Hide Behind the Same Base Number

Within the S130 to S185 range alone, the tensioner assembly shifted between spring force specifications and arm pivot geometry across production runs. The fan pulley changed bore diameter and groove count on certain serial breakpoints. A cross-reference that reads "fits S130-S185" without serial qualification may deliver a component that physically bolts on but cannot maintain correct belt tension. I always match the tensioner arm travel and pulley groove profile against the removed unit before confirming compatibility [NEED_CITE: aftermarket belt tensioner variant documentation for compact loaders].

Pulley Bore, Bearing, and Groove Profile Matching

The cooling fan pulley in this kit must match the shaft diameter, bearing type, and belt groove profile specific to each loader series. A mismatch in groove depth or angle causes the belt to ride too high or too low, leading to edge wear and premature failure. Bearing specification matters equally — sealed versus shielded, and the load rating must handle the fan inertia at operating RPM. These dimensions are checked against the existing pulley before the replacement kit is confirmed for dispatch.

The Cost of Fitment That Looks Right Until the Engine Starts

A tensioner that bolts on but applies incorrect spring force will let the belt slip under load, glazing the belt surface and overheating the pulley bearing. The operator hears the squeal and shuts down, but by then the belt is damaged and the pulley bearing has taken impact loads it was not designed for. The repair now requires a new belt on top of the tensioner and pulley kit that should have been correct the first time [NEED_CITE: belt drive failure modes from incorrect tensioner specification].

Why Source This Kit Here

Self-produced and qualified-sourced lines carry the same inspection and warranty terms, so this Drive Belt Tensioner & Fan Pulley Kit ships under one accountability. Eight product categories mean the belt, filters, and seal kits for the same repair travel in one consignment. Orders start from one piece — no minimum blocking an emergency single-kit purchase. Compatibility is verified from a part number, machine model, photograph, or nameplate image. A sample kit is available for physical fitment trial before committing to fleet-level quantities. The technical team confirms variant matching and serial range coverage before any order is finalized.

Documentation & Verification

• Commercial invoice and packing list with full kit line items and serial traceability
• Part compatibility and cross-reference sheet marking 6735884 and 6662997 as reference only
• Quality inspection record covering tensioner spring force and pulley rotational smoothness
• Warranty terms document specifying coverage period and manufacturing defect scope
• Packing photographs showing kit contents and protective packaging before crate closure
• HS code and customs documentation support for international belt drive component shipments

Fitment Check Before Installation

• Compare tensioner arm geometry and pivot position against the removed unit before mounting
• Verify pulley bore diameter and keyway against the fan shaft with calipers
• Check belt groove count and profile angle match the existing belt specification
• Confirm mounting bolt pattern spacing against the bracket holes on the engine block
• Rotate the new pulley by hand to check bearing smoothness and absence of axial play
• If any dimension does not match, halt installation and contact for cross-reference recheck

Identify the Right Kit for Your Machine

Provide the full machine model and serial number so the cross-reference can be verified against production records. If the nameplate is worn or painted over, send a photograph of the machine and the existing tensioner and pulley assembly. For fleet orders across multiple Bobcat loader generations, share the model list and serial ranges to confirm variant coverage before ordering.

Frequently Asked Questions

Q: How do I confirm this kit fits my specific Bobcat serial number? A: Provide the full machine model and serial number so we can verify the tensioner variant and pulley specification against production records. Serial breakpoints determine which arm geometry and groove profile are correct. We cross-check against superseded numbers and return a confirmed fitment statement before you commit to the order.

Q: My old part number is different — is it superseded by 6735884 or 6662997? A: Send the number from your existing component. We run it through the cross-reference database covering superseded and alternate numbers, then confirm whether 6735884 or 6662997 is the correct current equivalent for your serial range. This verification is marked as reference only and checked against your machine records.

Q: Why do some listings show different pulley variants under the same base number? A: Bobcat changed pulley bore, bearing type, and groove profile across production runs within the same model family. Listings that cover the entire range without serial qualification may show conflicting specifications. We narrow the correct variant by matching your serial number to the production breakpoint where the change occurred.

Q: I only have the machine model, no readable part number — can you identify the correct kit? A: Yes. Send the machine model and serial number, or a photograph of the existing tensioner and pulley if the nameplate is unreadable. We measure key dimensions against our reference samples and return a compatibility confirmation. This avoids trial fitment on site with the machine already waiting.

Q: Can I order a sample to test fitment before buying in bulk? A: A single sample kit is available for physical fitment trial. Install it on one machine, verify bolt pattern, belt routing, and tensioner operation, then confirm the bulk order. This eliminates the risk of receiving a fleet quantity that does not match a variant difference you were not aware of.