Belt Tensioner 3936213 5259022 3976831 | Verified Fitment for Cummins Engine
Belt Tensioner 3936213 5259022 3976831, A380 aluminum housing, dual-lip NBR sealing —...
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<p><strong>Drive Pump Belt 6736775, 58.15" Length, 3-Groove Cogged Design</strong> — fits Bobcat skid-steer and compact track loaders including 753, S130–S205, T140–T190, and Toolcat 5600. Fiber-loaded backing with internal cord reinforcement ensures stable tension across pulley and pump interfaces.</p> <ul> <li>Superseded or alternate references under 6736775 (cross-reference only) vary by machine generation — confirm serial range before ordering</li> <li>Variant differences in belt width and groove profile exist across model series; one variant may fit while another will not</li> <li>Worn or painted-over nameplates? Send a machine model photo for identification</li> </ul> <p>Cross-reference verified against serial-level fitment data — sample available for trial fitment before bulk commitment.</p>
Verified Cross-Reference — Drive pump belt 6736775 checked against machine serial range before dispatch, covering 11 Bobcat loader variants
| Parameter | Value |
|---|---|
| Part Number | 6736775 |
| Cross-Reference | 6736775 (reference only) |
| Product Type | Belt |
| Machine Fitment | Bobcat 753, S130, S150, S160, S175, S185, S205, T140, T180, T190, Toolcat 5600 |
| Design Type | Flat, cogged drive belt with 3 grooves |
| Length | 58.15 inches (1477 mm) |
| Width | 1.19 inches (30.2 mm) |
| Material | Fiber-loaded backing with additional cord support |
| Condition | New Aftermarket |
| Standard | ISO 9001 |
| Warranty | 3–12 months against manufacturing defects |
| Machine Model | Fitment Notes |
|---|---|
| Bobcat 753 | Verify serial range; early and late production may use different tensioner setups |
| Bobcat S130 | Confirm 3-groove pulley alignment before installation |
| Bobcat S150 | Check belt routing against service manual for pump-driven attachment circuits |
| Bobcat S160 | Cross-check with nameplate; some units supersede to updated drivetrain layouts |
| Bobcat S175 | Inspect pulley wear; mismatched groove depth causes premature belt tracking failure |
| Bobcat S185 | Serial-number-dependent variant; submit machine ID for confirmation |
| Bobcat S205 | Late-model drivetrain; verify belt length against installed tensioner position |
| Bobcat T140 | Compact track loader; access requires partial guard removal for belt inspection |
| Bobcat T180 | Confirm pump shaft interface matches 3-groove cogged profile |
| Bobcat T190 | Higher-output hydraulic system; belt tension specification may differ from S-series |
| Bobcat Toolcat 5600 | Utility work machine; verify belt routing through auxiliary drive path |
The part number alone does not guarantee fitment across all listed Bobcat loaders.
A cross-reference table copied between aftermarket sellers often collapses several drivetrain variants into a single line item. In practice, the same base number can correspond to different belt lengths, groove profiles, or tensioner clearances depending on the machine generation and serial range. A Bobcat S185 built in an earlier production window may route its drive pump differently than a later unit carrying the same model badge. Workshops that order by number without confirming the serial range frequently receive a belt that is dimensionally close but physically incompatible with the installed pulley set [NEED_CITE: skid-steer drivetrain variant identification by serial range].
I once supported a repair in a copper mining region where a loader belt arrived matching the printed reference yet refused to seat on the pulley — the groove count on the replacement differed from what the machine actually required. The downtime doubled while the correct variant was sourced. That kind of field mismatch is what drives the serial-number-first verification approach used here.

The Drive Pump Belt 6736775 for Bobcat Loaders covers 11 machine models spanning skid-steer loaders, compact track loaders, and the Toolcat utility platform. Each model sits within a specific serial range that determines which drivetrain variant was installed at the factory. Providing the machine serial number — or a clear photograph of the nameplate — allows the technical team to isolate the exact belt configuration required, rather than relying on a model-level assumption that may not hold across production years.
This belt features a flat, cogged design with 3 grooves that must match both the pump-end and engine-end pulley profiles. A mismatch in groove count or cog spacing will cause the belt to ride high or track off-center, leading to rapid edge wear or sudden disengagement. Before confirming an order, compare the groove count on the existing pulley against the replacement specification. If the original belt is still installed, photograph the pulley face and the belt cross-section to support visual cross-verification [NEED_CITE: cogged belt groove matching standards for hydraulic drive systems].
The 58.15-inch length and 1.19-inch width define the belt's working envelope inside the drive housing. Length determines whether the belt can be routed and tensioned within the available adjustment range; a belt even slightly outside tolerance will either not reach the pulleys or will over-tension the automatic adjuster, loading the pump bearing prematurely. The fiber-loaded backing with internal cord support provides the tensile strength needed to transmit torque from the engine to the hydraulic pump under continuous load. The 3-groove cogged profile increases the contact surface on each pulley, distributing load across multiple ribs and reducing the point stress that causes individual groove cracking.

When a belt arrives with the correct reference number but the wrong variant, the machine stays down while the return and re-shipment cycle plays out. Even if the belt can be forced onto a mismatched pulley, early failure is likely — a belt riding on the wrong groove depth will develop heat buildup at the cord line and fail within a short operating window. The repair cost is minor compared to the lost production hours on a construction site or quarry where a single loader supports multiple downstream operations [NEED_CITE: mobile equipment unplanned downtime cost factors].
Selected part lines are produced in-house while the remainder is sourced from ISO-certified manufacturing partners, and both carry identical quality control and warranty terms. A single account covers engine parts, hydraulic components, undercarriage, and cabin items — so a full repair list for a Bobcat loader ships as one consignment rather than fragmented orders. Minimum order starts at one piece, which matters when a single belt is the only item holding up a machine return. Cross-reference verification covers superseded numbers and alternate references, and a sample can be supplied for fitment confirmation before any bulk commitment is made. The technical team confirms compatibility against machine serial number, photograph, or nameplate image within a short turnaround.
Provide your Bobcat machine model, serial number, or a clear photograph of the existing belt and nameplate. The technical team will cross-verify the reference number 6736775 against your specific serial range and confirm which variant is required. For fleet operators managing multiple Bobcat units, submitting the full machine list enables a consolidated compatibility review before any order is placed.
Q: How do I confirm this belt fits my specific Bobcat loader? A: Submit the machine model and serial number, or a photograph of the nameplate. The technical team cross-references the serial range against the drivetrain variant on file, confirming whether the 3-groove cogged belt at 58.15 inches matches your unit. This step eliminates the guesswork that arises when the same base number covers multiple production runs.
Q: The old belt part number is worn off — can I still identify the replacement? A: Yes. Provide the machine model and serial number, or a photo of the nameplate and the existing pulley. The belt is identified through the machine's build record rather than the faded print on the old part, ensuring the correct variant is matched even when the original labeling is no longer legible.
Q: Why do different sellers describe the same reference number differently? A: Cross-reference tables are often copied between listings without verification against serial-level build data. A single reference may cover multiple belt variants across production years. Each inquiry here is verified against the specific machine serial range to isolate the correct configuration, rather than relying on a generic table entry.
Q: Can I order a single sample for fitment testing before committing to a bulk order? A: A single-piece sample is available for fitment confirmation. Install it on one machine, verify groove alignment and tensioner behavior, and then proceed with the full order once compatibility is confirmed on your specific serial range. This approach prevents fleet-wide mismatches.
Q: I only have the machine model, not the part number — is that enough? A: The machine model narrows the search, but the serial number is what confirms the exact variant. If the serial number is unavailable, a photograph of the nameplate and the existing pulley setup provides an alternative identification path for the technical team to cross-verify.
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