款号	KS-804022
适用车型	Usual vehicle style	STAREX(DIESEL)
额定电压(V）	Rated Volatge	12V
皮带槽楼X根数	Belt Groove Type Number	7PK
皮带轮直径M M	Pullpy Outer Diameter	125MM
轴承规格	Bearing Size	305523

AC clutch overview

An AC clutch is the component that helps connect a belt-driven compressor to the engine when cooling is needed, then disengages it when it is not. For buyers, that solves a practical problem: keeping the air conditioning system responsive without forcing the compressor to run all the time. Based on the visible features provided, this unit appears to be a pulley-and-clutch style assembly for automotive or similar rotating equipment, with a grooved belt surface, central hub, and a rear-side electrical lead that may indicate an electromagnetic function.

In vehicle HVAC systems, the air conditioning clutch must handle repeated starts, steady belt transfer, and alignment under engine vibration. A worn or damaged clutch can cause noise, slip, inconsistent compressor engagement, or belt drive issues. A replacement part with the right geometry and hub interface helps restore dependable compressor operation and reduce downtime.

Product reference and visible structure

This part has a compact, round, low-profile form factor with a black-coated outer body and machined concentric grooves on the belt-contact face. The center area includes a metal hub or bore with a visible bearing or bushing ring. On the rear side, three equally spaced mounting pads are visible around a center fastener area, along with a wire lead that may connect to a coil or sensor circuit. Those details are consistent with an AC compressor clutch or a closely related compressor clutch assembly, though exact fitment cannot be confirmed from the image alone.

Key visible features

The visible belt surface is designed for multi-rib belt engagement. The central hub supports rotation and alignment. The rear mounting face suggests an assembled clutch unit rather than a simple pulley shell. Because the exact groove count, diameter, and electrical rating are not supplied, buyers should confirm dimensions and connector details before ordering a replacement AC clutch.

Key capabilities buyers look for

For this type of automotive AC clutch, the important functions are smooth belt transmission, reliable engagement/disengagement, and stable rotation under continuous accessory drive conditions. In compressor applications, the clutch helps isolate the compressor when cooling demand is low, which can reduce unnecessary load on the engine and improve control of the HVAC system.

When comparing an automotive AC clutch or compressor clutch, buyers usually check the pulley profile, hub style, mounting pattern, bearing quality, and coil connection layout. Matching those practical points is often more important than appearance alone.

Materials, finish, and construction

The visible body appears to be made from a machined and stamped metal assembly with a protective black finish. The grooved belt face likely uses precision machining to support even belt contact. The central hub area includes a bearing or bushing seat, while the rear shell shows formed mounting pads. If this is an electromagnetic unit, the wire lead suggests an electrical coil connection, but that should be treated as likely rather than certain.

Finish and wear considerations

A coated exterior can help resist surface corrosion in automotive environments. The machined groove pattern is important for belt tracking and reduced slip. For replacement AC clutch selection, condition of the bearing, hub face, and mounting points should be inspected carefully, especially if the old part showed noise or heat discoloration.

Manufacturing and assembly notes

From the visible structure, this part likely involves machining for the pulley face, stamping or forming for the shell sections, and assembly of the hub, bearing, and mounting features into one compact unit. If an electromagnetic coil is included, the final assembly would also require wiring and electrical integration. The result is a layered mechanical component built to transfer rotary motion through a belt drive with controlled engagement.

Typical application scenarios

Most buyers will consider this part for belt-driven automotive accessory systems, especially air conditioning compressor drive systems. It may also suit other rotating equipment that uses an engagement clutch to connect or disconnect driven load from a belt source. Common replacement situations include clutch noise, worn pulley bearings, slipping engagement, damaged coil leads, or a failed front face assembly.

Quality control points

For an AC clutch assembly, useful inspection points include concentricity of the pulley face, smoothness of the bearing rotation, integrity of the mounting pads, consistency of the groove pattern, and secure electrical lead attachment if applicable. Buyers should also verify hub bore size, fastener pattern, and clearance to adjacent components. Because fitment is vehicle-specific, dimensional confirmation is essential before installation.

Customization and buying guidance

When sourcing a replacement AC clutch kit or individual clutch part, share the compressor model, pulley dimensions, connector style, and any visible markings. If you are matching an existing vehicle AC clutch, compare the groove profile and mounting interface rather than relying on general shape alone. For industrial users, request details on shaft interface, duty cycle expectations, and environmental exposure if the part will be used outside standard automotive service.

Before purchase, decide whether you need only the clutch face, a full AC clutch assembly, or a broader repair kit that includes related wear components. For maintenance teams, the most practical option is often the one that matches the failed interface exactly and minimizes rework during installation.

Send your requirements

If you need a replacement AC clutch or want to confirm compatibility for a compressor clutch application, send the part dimensions, connector photos, and vehicle or equipment details. A clear reference sample helps narrow the correct fit and reduces ordering errors.