Fan Pump Assembly

CAT336D

Machine-fit fan pump — CAT336D

Full specs	Ask us for the data sheet
Condition	New · OEM-standard aftermarket
Warranty	6–12 months
Lead time	Stock 48 h · Non-stock 5–15 days

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Fan pumps are listed by machine fitment. Every unit is tested before dispatch. Send a photo of the old pump on WhatsApp if you are unsure about the match.

About This Fan Pump

CAT fan pumps for 330D/336D/345C/345D-class excavators. The fan pump is a small dedicated piston or gear pump that drives the cooling fan circuit independently of the main pump — replacing it restores stable fan speed and cooling.

The CAT336D is an OEM-standard aftermarket replacement built to the original mounting, spline and port specification. Bolt-on installation — no machining or adaptation required.

Every unit is inspected and pressure-checked before dispatch and ships with a test report. Stock models leave within 48 hours; non-stock units are typically ready in 5–15 days. Sea, air and express shipping are available worldwide, and our team answers quote requests within 12 hours — usually much faster on WhatsApp.

Why does my machine overheat at idle?

A worn fan pump delivers too little flow at low engine speed, so the fan slows and cooling drops. This is the classic fan-pump symptom — replacing the pump usually restores it.

Is the drive coupling included?

The pump is supplied as shown. Tell us your coupling or spline type and we include the matching part in the quote.

Can I get the fan motor too?

Yes — pair it with a fan motor from the Fan Motor Catalog for a complete fan drive refresh.

Get a Quote in 12 Hours

Send your part number, machine model or a nameplate photo — WhatsApp is fastest.

WhatsApp: +86 134 5036 5883 Email: [email protected]

CAT336D

About This Fan Pump

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Get a Quote in 12 Hours