This Oil Pump is a Genuine Husqvarna OEM part designed to deliver consistent bar and chain lubrication on professional and farm/ranch chainsaws. Built with a durable metal (die‐cast alloy) body and precision internal components, it replaces the original pump to restore reliable oil flow and protect the guide bar, chain, and drive components from heat and wear. It is suitable for a wide range of Husqvarna and Jonsered machines used in forestry, landscaping, and construction. Identified by OEM No. 503 52 13-03 (MPN 503521303), it is a direct-fit replacement on many models, including the Husqvarna 372 XP and 365 X‐Torq. This Genuine Part offers long service life and straightforward installation using standard workshop tools.

Key Features:
- Genuine Husqvarna OEM oil pump for assured fit and performance (503521303 / 503 52 13-03)
- Provides steady bar and chain lubrication to reduce friction, heat, and wear
- Robust die‐cast alloy construction with quality seals for durability
- Direct replacement for the factory pump on listed models; no modification required
- Supports smooth cutting performance in demanding conditions
- Compatible with standard mineral or bio chain oils used in chainsaws
- Helps extend the service life of the chain, guide bar, and sprocket
- Practical to fit during routine servicing or rebuilds with basic tools

Typical Applications:
Used to maintain or restore correct chain lubrication on Husqvarna and Jonsered chainsaws during servicing, after oiling faults, or as part of a top-end or clutch-side rebuild. Suitable for regular use in forestry, arborist work, site clearance, firewood processing, and grounds maintenance.

Also known as:
Bar and chain oil pump, chain oiler, automatic oiler, lubrication pump, oiling system pump, saw oiler, chain lubrication pump.

Fits Models:
362, 362 XP SPECIAL, 362 XP SPECIAL EPA, 362XP, 362XPSPECIAL, 362XPSPECIALEPA, 365, 365 H, 365 SPECIAL, 365 X-Torq, 365H, 365SP, 365SPECIAL, 372 XP, 372 XP X-TORQ, 372XP, 372XP X-Torq, 570, 570 II, 570II, 575 XP, 575XP, 576 XP, 576 XP AUTO TUNE, 576XP, 576XP AutoTune, 576XPAutoTune, CS2163, CS2165, CS2165 EPA, CS2165EPA, CS2166, CS2171, CS2172