Description
Overview:
This Oil Pump Assembly is a Genuine Husqvarna component designed to keep the bar and chain on your chainsaw correctly lubricated during cutting. Built with a tough metal alloy body in a durable silver finish, it delivers a consistent flow of chain oil from the tank to the guide bar and chain, helping to reduce friction, heat, and wear. It is made to fit Husqvarna 550XP and 545 series machines and restores reliable oiling when the original pump becomes worn, blocked, or damaged. Supplied as a direct replacement with manufacturer part number 505199904, it suits professional forestry and arborist work as well as demanding domestic tasks. A sound oiling system improves cut quality, reduces maintenance issues, and helps extend bar and chain service life.
Key Features:
- Genuine Husqvarna part for correct fit and function (MPN 505199904)
- Designed specifically for the 545 and 550XP series for straightforward replacement
- Robust metal construction for wear resistance and long service life
- Consistent oil delivery to bar and chain to minimise friction and overheating
- Helps prevent premature chain stretch and bar rail damage
- OE-quality tolerances support reliable performance in tough conditions
- Direct-fit assembly; no modifications to the saw body required
- Suitable for professional users and DIY owners maintaining regular cutting performance
Typical Applications:
Use when chain oiling is weak, intermittent, or absent, or after contamination or damage caused by heavy use. Ideal for restoring proper lubrication on felling, snedding, limbing, and firewood processing tasks. Helps maintain clean cuts, reduce downtime, and support safe, efficient operation across forestry, arboriculture, landscaping, and site work.
Also known as:
Bar and chain oiler, chain oil pump, lubrication pump, oiling pump assembly, chainsaw oiler unit, chain lube pump, pump assy for chain lubrication.
Fits Models:
545
550 XP
550 XPG
550XP
550XPG
Alternate Part Numbers:
505199904
Product Specifications
| L&S Part No. | 505 19 99 04 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 505199904 |
| Unit of Sale | 1 |
| Applications | 545, 550 XP, 550 XPG, 550XP, 550XPG |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 545 | 550XP, 550XPG |
