Products Description
Chainsaw Oil Seal (Pair) – Crankcase Sealing Kit for Husqvarna Professional Saws
High-Quality Replacement Oil Seal Set for Husqvarna 181, 281, 288 & Compatible Models
This oil seal pair is a direct replacement for the crankshaft seals on Husqvarna 181, 281, 288, 385, 390, 394, 395, 2100, 2101, and 3120 professional chainsaws . These seals maintain proper crankcase pressure and prevent air and fuel leaks, ensuring reliable engine performance in demanding forestry applications. Replaces OEM part number 503 26 02-05 . Professional users and workshops rely on these seals for engine rebuilds and routine maintenance, with both genuine Husqvarna and quality aftermarket options available .
Technical Profiles & Materials
OEM-Spec Replacement Fitment – Replaces Husqvarna OEM part number 503 26 02-05 . Fits Husqvarna 181, 281, 288, 385, 390, 394, 395, 2100, 2101, and 3120 models . Also compatible with Jonsered 2094, 2095, CS2186, CS2188, and Husqvarna K950, K960, K970 cut-off saws .
Double-Lip Seal Design – OEM seals feature a double-lip configuration that provides superior sealing and prevents air leaks . The 288/281 seal measures approximately 28 x 17mm, while the 272 family uses a smaller 26 x 15mm seal . A single-lip generic replacement is available but less effective .
Durable Construction – Genuine Husqvarna seals are manufactured to exact specifications for long service life. Aftermarket options provide reliable performance at a competitive price point .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | OEM Part No. | 503 26 02-05 |
| 2 | Compatible Models | HUS181, HUS281, HUS288, HUS385, HUS390, HUS394, HUS395, HUS2100, HUS2101, HUS3120 |
| 3 | Also Compatible | Jonsered 2094, 2095, CS2186, CS2188; Husqvarna K950, K960, K970 |
| 4 | Seal Size (Approx.) | 28 x 17mm |
| 5 | Stens Cross-Reference | 622-076 |
| 6 | Unit of Sale | Pair (2 seals) |
| 7 | OEM Option | Genuine Husqvarna available |
Products Application
Full Engine Rebuild & Restoration
These seals are essential for complete engine overhauls on Husqvarna 281 and 288 XP saws. Professional rebuilders use them alongside crank bearings, gasket sets, and pistons to restore saws to original performance . Aftermarket bearing and seal kits provide a cost-effective solution for full crankcase restoration .
Air Leak Prevention & Performance Restoration
Chainsaw crankshaft seals primarily maintain a negative air pressure seal in the crankcase, which is part of the engine's intake system . Failed seals cause air leaks, leading to lean running conditions, erratic idle, and potential engine damage . Deteriorated seals with crumbling rubber are common on high-use professional saws .
Professional Workshop Service
Repair centers servicing fleets of Husqvarna professional saws rely on these seals for fast turnaround. The seal pair provides all necessary components for crankcase sealing. The seals are lubricated by a small amount of oil, which also helps keep the seal moist . Users report that flywheel side seals are particularly prone to gunking up with oil residue and sawdust over time .
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
Trusted Partnership Power
YOUR PROFESSIONAL ONE-STOP SOURCE
FOR 10000+ OUALITY PARTS
Verified Factory Excellence
BACKED BY 200+ TRUSTED FACTORY PARTNERS
Production process
Quality control
Expo experience
Customer Reviews
FAQ
Q: How do I confirm this oil seal pair fits my Husqvarna chainsaw?
A:Check your chainsaw model number on the housing. This oil seal pair fits Husqvarna 181, 281, 288, 385, 390, 394, 395, 2100, 2101, 3120, and compatible models listed above . It replaces OEM part number 503 26 02-05. The seal measures approximately 28 x 17mm for these models .
Q: What is the difference between the 503-26-02-05 and 503-26-02-04 seals?
A: The 503-26-02-05 seal (this set) is for larger saws using 6203 bearings, including the 281, 288, 385, 394, 395, and 2100/2101 series . The 503-26-02-04 seal is for the smaller 61, 266, 268, and 272 family using 6202 bearings and measures 26 x 15mm . They are not interchangeable.
Q: What are the symptoms of failed crankshaft oil seals?
A: Common symptoms include hard starting, erratic idle, lean running conditions, and visible oil residue or "black marbles" of oil and sawdust on the flywheel side . The seals can deteriorate with rubber crumbling over time . Seals should be replaced during any full engine rebuild.
Hot Tags: chain saw oil seal(pair), China chain saw oil seal(pair) suppliers, hs281 288 parts, HUS281 HUS288 Gasket Set, HUS287 HUS288 Oil Pump
