Belt Tensioner Kit 6662997 – Model-Matched for Bobcat S130 S300

Model-Matched Fitment — every kit component is cross-referenced against Bobcat skid steer and track loader serial ranges before dispatch.

Technical Specifications

Application Suitability

Why the Same Belt Tensioner Number Ships in Multiple Variants

Ordering from a copied cross-reference table is the fastest route to a mismatch on site.

Bobcat part numbers get superseded across model generations, and a single base Belt Tensioner Kit cross reference number can correspond to several production variants. Arm geometry, spring tension rate, and idler pulley bore diameter often differ between an S130 and an S300, even though catalog tables collapse them into one line. We see machines arrive at the workshop with the correct part number on the box but the wrong arm length inside — the tensioner bolts on but cannot achieve proper belt deflection. These mismatches are not caught until the engine cover comes off and the old assembly sits beside the new one. [NEED_CITE: aftermarket part number supersession and variant tracking in compact equipment]

Serial Range Verification Across Three Machine Families

This Belt Tensioner for Bobcat kit spans skid steers from the 653 through the S300, track loaders from the T140 through the T300, and wheel loaders in the A220 to A300 range. Each machine family has distinct tensioner mounting patterns and fastener specifications. The screw 38C820 and nut 61D6 thread engagement must match the engine block boss on the target serial range. We verify the applicable serial window before confirming fitment, rather than shipping based on model name alone.

Variant Differences Hidden Behind One Base Number

The arm 6725212, retainer 6702474, and fan drive idler pulley 6662997 can appear across several kit configurations, yet the spring 6700115 rate and the bushing 6704443 outer diameter may shift between early and late production machines. A T250 built in one serial block may use a different grease ring 6660995 profile than a T250 from a later run. These Belt Tensioner fitment differences are invisible in most online listings. Cross-referencing every component number against the existing assembly is the only reliable method before committing to quantity. [NEED_CITE: Bobcat service manual variant notes for belt drive systems across serial ranges]

Reading the Specs That Matter on a Belt Drive Tensioner

The kit includes twelve distinct components, and each plays a defined role in maintaining correct belt tension under thermal and load cycling. The bearing 6655781 inside the idler pulley must sustain continuous radial load at engine operating temperature without premature play. The O-ring 6704820 seals the pivot bushing against dust and moisture ingress — common failure points on construction sites where fine abrasive material reaches the engine bay. The washer 6704444 distributes clamp load across the arm mounting face, preventing localized stress that cracks the arm bracket over time. Spring 6700115 tension is calibrated to the specific belt length and alternator-to-crankshaft distance of each engine family, which is why a spring from an S175 variant may not maintain adequate tension on an S300.

The Cost of Installing a Variant That Almost Fits

A Belt Tensioner Kit that bolts on but carries the wrong spring rate will allow belt slip under load, generating heat that degrades the belt and accelerates pulley bearing wear. If the arm geometry is slightly off, the idler pulley may not align with the crankshaft and alternator grooves, causing the belt to track sideways and shed material within operating hours. These failures rarely show up on the first start — they emerge after the machine returns to work, forcing a second teardown and a second round of downtime. The labor cost of the repeat repair consistently exceeds the value of the part itself. [NEED_CITE: belt drive misalignment failure modes in skid steer loaders]

Why Procurement Teams Source This Kit Through Our Counter

Own production on selected lines and qualified sourced supply sit under one account with one warranty, so there is no split responsibility if a component in the kit needs attention. Eight categories of parts ship from one Guangzhou warehouse, meaning a complete belt drive overhaul — tensioner, belts, filters, seals — consolidates into a single consignment. Minimum order from one piece allows sample fitment before any bulk commitment across a mixed fleet. Part identification works from a part number, a machine model, a photograph of a worn nameplate, or a close-up of the existing assembly. Cross-reference verification covers superseded and alternate numbers, catching variant conflicts before the kit leaves the warehouse. A technical team is available to confirm compatibility and grade against specific serial ranges.

Documentation & Verification

• Commercial invoice and packing list listing every kit component with individual part numbers.
• Cross-reference sheet mapping superseded numbers to the current Belt Tensioner Kit variant (reference only).
• Dimensional check record covering arm length, pulley bore, and mounting hole spacing before dispatch.
• Warranty terms stating coverage period and manufacturing defect conditions.
• Packing photographs showing kit contents verified against the order list prior to crate closure.
• HS code and customs documentation support for cross-border shipment.

Fitment Check Before Installation

• Compare the arm 6725212 length and mounting hole positions against the removed assembly before installing.
• Verify screw 38C820 and nut 61D6 thread pitch matches the engine block boss thread.
• Check idler pulley 6662997 bearing for smooth rotation with no radial play before mounting.
• Confirm spring 6700115 free length matches the specification for the target Bobcat serial range.
• Inspect O-ring 6704820 and bushing 6704443 for correct cross-section and outer diameter.
• If any component does not match, stop installation and contact us with photographs for variant re-check.

Request a Fitment Verification Before Ordering

Provide the Bobcat machine model, serial number, or a photograph of the existing tensioner assembly and nameplate. We cross-reference every kit component against the target serial range and return a confirmed Belt Tensioner for Bobcat match, including any variant notes relevant to the specific machine.

Frequently Asked Questions

Q: How do I confirm this Belt Tensioner Kit fits my specific Bobcat serial range? A: Share the machine model and serial number, or send a photograph of the existing tensioner and nameplate. We verify each kit component — arm, spring, pulley, and fasteners — against the target serial range and confirm the correct variant before shipment, so the assembly installs correctly on the first attempt.

Q: My old part number is no longer listed in current catalogs — can this kit still work? A: Yes. We maintain superseded number paths that map discontinued references to current production variants. Provide the old number from the existing component or the machine serial plate, and we cross-reference it against the active Belt Tensioner Kit cross reference to confirm interchange compatibility with your specific machine.

Q: Why are there multiple part numbers for what looks like the same tensioner? A: Bobcat assigns different numbers to tensioner variants that share a base design but differ in spring rate, arm geometry, or pulley bearing specification. These differences correspond to engine family and serial range changes across model generations. We verify every component number to ensure the correct variant ships.

Q: I only have the machine model and no readable part number — can you identify the right kit? A: A machine model narrows the range, but serial number or a photograph of the existing assembly is preferred for Belt Tensioner fitment certainty. If the nameplate is worn or painted over, we use model-specific reference data combined with component photographs to pinpoint the correct variant.

Q: Can I order a sample to check fitment before placing a larger order? A: Yes. The minimum order is one piece, so you can order a single Belt Tensioner Kit for trial installation on one machine. Once fitment is confirmed against your fleet's serial ranges, you can commit to the required quantity with confidence that every unit will match.