Husqvarna 531300354 Oil Cap – Genuine OEM Replacement for 340, 345 & 350 Chainsaws

Part Number: 531300354
Category: Chainsaw Bar & Chain Oil Tank Caps, Lubrication & Replacement Parts
Type: Bar & Chain Oil Tank Cap – Genuine OEM Replacement Chainsaw Oil Cap

The Husqvarna 531300354 Oil Cap is a genuine OEM replacement bar and chain oil tank cap designed for select Husqvarna chainsaws, including the popular 340, 345, and 350 models. Installed on the chainsaw's oil reservoir, the cap seals the bar and chain oil tank while providing convenient access for refilling chain lubricant.

Product Specifications

• Part Number: 531300354
• Manufacturer: Husqvarna
• Product Type: Chainsaw Oil Tank Cap
• OEM Description: Oil Cap In Clam 340/345/350
• Full Description: Bar & Chain Oil Tank Cap
• Component Type: Oil Reservoir Cap / Lubrication System Component
• Function: Seals the Chainsaw Bar & Chain Oil Tank
• System: Bar & Chain Lubrication System
• Application: Gas Chainsaw
• Compatible Brand: Husqvarna
• Confirmed Models: 340, 345, 350, 351, 353 & 346XP
• Unpackaged OEM Part Number: 537281502
• UPC: 705788212811
• Replacement Type: Direct OEM Replacement
• OEM Status: Genuine Husqvarna OEM Part
• Condition: New
• Quantity: 1 Oil Cap

Husqvarna's current dealer documentation confirms 531300354 as the clamshell-packaged oil tank cap and 537281502 as its corresponding unpackaged part number.

Features & Benefits

• Genuine Husqvarna OEM replacement oil cap
• Factory-designated Bar & Chain Oil Tank Cap
• Designed specifically for compatible Husqvarna chainsaws
• Fits popular 340, 345, and 350 chainsaw models
• Also compatible with documented 351, 353, and 346XP applications
• Seals the bar and chain oil reservoir
• Helps prevent bar oil from leaking from the tank
• Helps keep dirt, sawdust, and debris out of the oil reservoir
• Provides convenient access when refilling bar and chain oil
• Complete cap includes the retention line according to documented retail listings
• Designed to match the original factory oil tank opening
• Helps restore a chainsaw with a damaged or missing oil cap
• Suitable for routine chainsaw maintenance and repair
• Ideal replacement for cracked, stripped, worn, leaking, damaged, or missing oil caps
• Direct replacement for chainsaws requiring part number 531300354
• Genuine OEM component rather than a universal replacement cap

Applications

Confirmed applications include:

• Husqvarna 340 Chainsaw
• Husqvarna 345 Chainsaw
• Husqvarna 350 Chainsaw
• Husqvarna 351 Chainsaw
• Husqvarna 353 Chainsaw
• Husqvarna 346XP Chainsaw
• Chainsaw bar and chain lubrication systems
• Bar oil reservoir repair
• Replacement of damaged or missing oil tank caps
• OEM replacement applications requiring 531300354
• Applications using unpackaged OEM cap 537281502

Husqvarna's 2026 parts catalog specifically lists the 340, 345, 350, 351, 353, and 346XP as compatible with this bar and chain oil tank cap.

Important Notes

• Verify compatibility with your specific Husqvarna chainsaw model, product number, serial number, and production revision before ordering.
• Husqvarna identifies 531300354 as a Bar & Chain Oil Tank Cap for the 340, 345, 350, 351, 353, and 346XP.
• OEM parts listings may describe the component as “Oil Cap In Clam 340/345/350.”
• Husqvarna's current catalog cross-references packaged part 531300354 with unpackaged oil tank cap 537281502.
• Do not confuse 531300354 with 531300355. Husqvarna lists 531300355 as a different bar and chain oil tank cap for models including the 51, 55, 55 Rancher, 136, 137, and 141.
• This component is the bar and chain oil tank cap, not the chainsaw's fuel tank cap.
• A damaged or missing oil cap can allow bar oil to leak and contaminants to enter the oil reservoir.
• Inspect the oil tank opening, threads, sealing surfaces, retention line, and surrounding housing when replacing the cap.
• Clean dirt, sawdust, old oil, and debris from around the oil tank opening before installing the replacement cap.
• Make sure the cap seats and seals correctly before operating the chainsaw.
• Do not operate the chainsaw with a missing, cracked, damaged, or improperly secured oil tank cap.
• If oil continues to leak after cap replacement, inspect the oil tank, sealing surfaces, and surrounding lubrication components for additional damage.
• This listing is for one Husqvarna 531300354 Bar & Chain Oil Tank Cap only unless otherwise specified. Bar oil, oil pumps, oil lines, tanks, housings, and other chainsaw components are sold separately.
• Match part number 531300354 with your chainsaw's illustrated parts diagram or OEM documentation before ordering to ensure proper fitment.