139T Rear Drive Belt 40024-04 – Verified Fitment for Harley Touring

Verified Cross-Reference Match — Six OEM reference numbers mapped and checked against your specific Harley Touring variant before any belt ships.

Technical Specifications

Application Suitability

Why One Belt Number Shows Up Under Six Different References

Cross-reference confusion is the leading cause of wrong-belt orders in Touring rear drive replacements. The 139T 1-1/8" Rear Drive Belt 40024-04 cross reference fitment for Harley Touring models spans six OEM reference numbers across multiple model years, and each variant can map to a slightly different sub-model.

I have spent enough time in warehouses watching belts get returned because a cross-reference table listed 1204-0063 (cross-reference only) as interchangeable with a completely different tooth count. The same physical belt appears under 4002404, 12040063, 58-439, and 58439 across different parts catalogs, but the tables carrying those numbers forward often contain copy-paste errors from one seller to the next [NEED_CITE: aftermarket belt cross-reference accuracy in touring motorcycle drivetrain]. A single tooth-count mismatch or a width that is off by even a few millimeters means the belt will not seat properly on the pulleys, and the machine stays down while you wait for the correct replacement.

Serial Range and Sub-Model Variant Checking

The fitment list for this Rear Drive Belt 40024-04 covers fifteen distinct Harley Davidson Touring sub-models from 2004 through 2006. Within a single model year, an EFI variant may share the same base belt as its carbureted counterpart, but not always. The FLHRC Road King Classic, for instance, only appears in 2004 for the non-EFI version, while the FLHRCI EFI variant runs through 2006. These differences matter because ordering by model name alone without confirming the fuel system type can lead to a belt that is dimensionally close but functionally wrong. Providing your machine's model year, sub-model designation, and ideally the VIN allows us to narrow the fitment down to the exact variant.

Pulley Engagement and Interface Verification

Before installing any replacement belt, the pulley tooth profile and width must be confirmed against the 139-tooth count and 28.5 mm width specification. Touring models from this generation use a specific rear drive pulley configuration, and previous belt replacements with incorrect widths can leave wear patterns that affect how a new belt seats [NEED_CITE: belt drive pulley wear patterns in heavy touring motorcycles]. Check the front and rear pulley flanges for lateral wear, and measure the installed belt path to confirm nothing has shifted from factory alignment. If the old belt shows asymmetric tooth wear on one side, that points to a pulley alignment issue that a new belt alone will not solve.

Reading the Specification Sheet Beyond the Part Number

The 139T tooth count defines the pitch length of the belt and determines which pulley pairs it can wrap around. A belt with fewer teeth would be too short to route, while one with more would not maintain proper tension. The 28.5 mm (1-1/8") width is equally critical — it must match the pulley groove width exactly so the belt tracks centered under load. The ISO 9001 manufacturing standard applied here means dimensional tolerances on tooth pitch and width are held within controlled ranges, which directly affects how smoothly the belt engages under the sustained highway speeds that Touring models are built for. New aftermarket condition means no prior tension history or heat cycling has altered the belt's cord structure before it reaches your pulleys.

The Cost of Shipping a Belt That Does Not Fit

A wrong belt discovered at the workshop bench means the motorcycle remains inoperable while the return and reorder cycle plays out. In a fleet or rental context, that single mismatch cascades — the scheduled ride or tour gets cancelled, and the customer goodwill damage compounds beyond the part cost. When the belt technically fits but is the wrong width variant, early edge wear appears within the first few hundred kilometers, leading to a premature replacement that nobody budgeted for [NEED_CITE: premature belt failure causes in touring motorcycle drivetrain applications]. Catching the mismatch before the belt leaves the warehouse eliminates all of this.

What This Supply Channel Brings to the Table

Own production on selected lines and qualified sourced supply under one account means this belt ships with the same warranty terms regardless of which facility produced it. Eight product categories available from a single source allow you to combine belt orders with filters, seals, and other drivetrain components in one consignment. Orders start from one piece, so a single emergency replacement does not require a minimum quantity commitment. Our Guangzhou warehouse maintains stock on common items for fast dispatch. Part identification works from a worn number, a machine model, or a photograph of the nameplate — whichever is all you have. Cross-reference verification covers all six listed OEM numbers plus superseded and alternate versions, and a sample unit is available for fitment trial before you commit to a bulk quantity.

Documentation & Verification

• Commercial invoice listing exact sub-model fitment and belt specification
• Cross-reference sheet mapping all six OEM numbers with reference only designation
• Dimensional inspection record confirming 139T count and 28.5 mm width
• Warranty terms covering manufacturing defects for 3-12 months
• Packing photographs showing belt condition before crate closure
• HS code and customs documentation support for international shipment

Fitment Check Before Installation

• Confirm 139T tooth count against the removed belt or pulley tooth tally
• Measure belt width at 28.5 mm to match pulley groove dimension
• Inspect both pulleys for lateral flange wear before routing the new belt
• Check belt routing path for alignment before applying tension
• Rotate the rear wheel by hand to verify tracking before engine start

Request Your Fitment Confirmation

Provide your Harley Davidson Touring model, model year, and sub-model designation — EFI or carbureted — along with any part number visible on the old belt or a photograph of the nameplate. Our technical team will verify the cross-reference match and confirm whether 40024-04 is the correct belt for your specific machine before you place an order.

Frequently Asked Questions

Q: How do I confirm this belt fits my specific Harley Touring model year and sub-model? A: Share your exact model designation — for example FLHTCI versus FLHTC — along with the model year. We cross-check that against our fitment database covering all fifteen Touring sub-models from 2004-2006, including EFI and Screamin Eagle variants, to confirm whether the 139T 1-1/8" Rear Drive Belt 40024-04 cross reference fitment for Harley Touring matches your machine.

Q: I have a different OEM number on my old belt — is it still the same part? A: It may be. This belt carries six cross-reference numbers including 1204-0063, 4002404, and 58-439, all marked as reference only. Send us the number from your old belt and we will verify whether it maps to the same 139-tooth, 28.5 mm specification or points to a different variant entirely.

Q: Why does one belt carry six different reference numbers? A: Different parts catalogs and distribution channels assign their own reference numbers to the same physical belt. Over model year transitions and supplier changes, numbers like 12040063 and 58439 accumulated as alternate identifiers for the identical 139T 1-1/8" specification used across the 2004-2006 Touring range.

Q: I only know my bike model, not the part number — can you identify the right belt? A: Yes. Provide the model name and year — such as a 2005 FLHTCUI EFI Electra Glide Ultra Classic — and we will identify the correct belt specification from our fitment records. A photograph of the nameplate or the old belt helps confirm the match when model details are ambiguous.

Q: Can I order a sample to test fitment before placing a larger order? A: A single sample unit is available so you can verify tooth engagement, width fit on your pulleys, and routing alignment on one machine before committing to a bulk quantity for a fleet or distributor inventory.