SINOCONVE 178623 178682 5PK 6PK 8PK V-Ribbed Fan & Alternator Belt

V-Ribbed Belts for Fan and Alternator Drive Requirements

SINOCONVE supplies 5PK, 6PK and 8PK V-ribbed belts for engine accessory and general mechanical transmission applications. This product range is associated with reference numbers 178623 and 178682, providing buyers with additional information when identifying replacement belts from spare-parts lists or existing inventory records.

Unlike a single fixed-size product, this listing covers several PK rib counts. The correct belt must therefore be selected using the complete combination of reference number, rib count, effective length and actual drive specification.

View more configurations in the SINOCONVE Poly V Ribbed Belt Range .

Reference Numbers 178623 and 178682

Reference numbers are useful when buyers are working from an equipment spare-parts list rather than from the complete dimensional marking printed on a belt. Published procurement records have listed these references in the following context:

5PK, 6PK and 8PK Options

All three configurations use the PK profile, but the number before PK identifies how many longitudinal ribs are present on the working side of the belt.

PK Profile Reference Dimensions

Fan Belt and Alternator Belt Identification

In engine spare-parts terminology, the terms fan belt and alternator belt may describe the accessory being driven rather than a unique belt cross section. The actual belt must still match the pulley profile, number of ribs and effective length.

For this reason, buyers should avoid ordering only by a generic description such as “fan belt.” A reference number or complete belt marking provides a much more reliable starting point.

How the Multi-Rib Design Transfers Power

A PK belt uses several narrow longitudinal ribs rather than one large V section. Each rib engages a corresponding pulley groove, allowing several friction surfaces to work together during transmission.

• Multiple pulley contact lines: several ribs work simultaneously to transfer load.
• Flexible belt path: the thin cross section supports repeated bending around accessory pulleys.
• Controlled elongation: tensile reinforcement helps stabilize operating length.
• Compact drive layout: suitable for engine and mechanical systems with limited installation space.
• Different working widths: 5PK, 6PK and 8PK provide different rib-count options for matching pulleys.

Belt Construction

Engine Accessory Applications

Depending on the final belt size and equipment arrangement, 5PK, 6PK and 8PK belts can be used to drive components such as:

• Alternators
• Cooling fans
• Water pumps
• Air-conditioning compressors
• Auxiliary pumps
• Other engine accessory components
• Industrial fans and compressors
• General multi-pulley transmission systems

For more vehicle-related applications, visit SINOCONVE Automotive Belt Solutions .

Reference Number Alone Is Not Enough

When purchasing a replacement belt, use several identification points together. This is especially important when one product family contains multiple rib counts.

1. Check reference number: 178623 or 178682 if applicable.
2. Confirm whether the required belt is 5PK, 6PK or 8PK.
3. Record the complete effective length.
4. Check the original belt marking if it is still readable.
5. Confirm the engine, machine or equipment application.
6. Compare additional OE or cross-reference information where available.

Suitable for Mixed Spare-Belt Purchasing

Distributors and maintenance buyers often source several engine belt specifications in one order. A purchasing list can therefore include different rib counts, lengths and reference numbers rather than treating this product as one fixed SKU.

• 5PK, 6PK and 8PK configurations
• Different effective lengths
• Reference-number-based sourcing
• OEM belt printing
• Private-label packaging
• Model labels and barcode requirements
• Mixed-model export orders

Learn more about SINOCONVE manufacturing and supply capabilities .

Information to Send for Quotation

• Reference number: 178623 / 178682 if applicable
• Complete belt marking
• Required rib count: 5PK / 6PK / 8PK
• Effective length
• Engine or equipment information
• OE or additional cross-reference numbers
• Quantity for each belt size
• Custom printing requirements
• Packaging and labeling requirements

Buyer FAQs

Are 178623 and 178682 complete belt sizes?

They are reference numbers used for belt identification. The rib count, effective length and actual application should also be confirmed before ordering.

What is the difference between 5PK, 6PK and 8PK?

The number indicates how many longitudinal PK ribs the belt has. 5PK has five ribs, 6PK has six and 8PK has eight.

Can a 6PK belt replace an 8PK belt?

No. The rib count must match the pulley and original drive specification. Similar belt length does not make different rib-count configurations interchangeable.

Why do I need the effective length if I already have the reference number?

Dimensional confirmation reduces the risk of selecting an incorrect cross-reference, particularly when spare-parts databases or old equipment records contain incomplete information.

Can several PK belt sizes be ordered together?

Yes. Mixed-model purchasing can be reviewed according to the required size list, quantities, belt marking and packaging requirements.