Husqvarna Mandrel Cover OEM #590304407

Protect your Husqvarna riding mower’s left-hand spindle and pulley assembly with this Genuine OEM 54-Inch Left Hand Mandrel Cover (Part #590304407). A genuine Husqvarna OEM replacement part precision-manufactured to exact factory specifications, this authentic mandrel cover shields the left-hand spindle housing and deck belt pulley from grass clippings, debris, moisture, and impact on compatible Husqvarna 54-inch mower deck models — helping protect one of the most critical and costly components on your mower deck.

What the Mandrel Cover Does:
The durable plastic mandrel cover connects to the mower deck and is used to house and protect the mandrel pulley assembly. On Husqvarna 54-inch decks, the left-hand mandrel cover sits atop the left spindle assembly, enclosing the drive belt pulley from above and shielding it from the constant stream of grass clippings, dirt, and debris that flows across the deck during mowing. Without a properly fitted mandrel cover, the pulley and upper spindle bearing are exposed to accelerated contamination and wear. A cracked, broken, or missing mandrel cover also creates a potential contact hazard with the rotating pulley and drive belt. Replacing it promptly with a genuine OEM cover restores factory-correct protection and safety.

Signs Your Mandrel Cover Needs Replacement:

• Visible cracks, breaks, or chunks missing from the cover body
• Cover no longer sits flush or clips securely to the deck mounting points
• Excessive debris and clipping buildup on the mandrel pulley and spindle housing
• Cover broken or dislodged from an impact with a rock, root, or obstacle
• Routine deck service or spindle replacement requiring fresh cover hardware

Key Features:

• Genuine Husqvarna OEM part — not aftermarket or generic
• Left-hand (LH) orientation — fits the left spindle position on compatible 54-inch Husqvarna mower decks
• Built from high-quality materials to withstand rigorous grass-cutting conditions
• Shields the mandrel pulley assembly from debris, clippings, moisture, and contact during mowing
• Precision-molded for correct fit on the 54-inch deck spindle mounting points without modification
• Designed to reduce maintenance needs and optimize mower deck performance
• Note: mounting hardware is sold separately — refer to your deck’s parts diagram

Compatibility:
This left-hand mandrel cover fits select Husqvarna riding mower and lawn tractor models equipped with 54-inch mower decks. The 590304407 part number belongs to the Husqvarna 54-inch Clearcut deck mandrel cover family, which includes multiple color and configuration variants. Always confirm fitment using your Husqvarna model and serial number — found on a label under the seat or on the equipment frame — and cross-reference against your unit’s Illustrated Parts List (IPL) to verify the correct side, deck size, and cover variant before ordering.

Part Details:

• Part Number: 590304407
• OEM Brand: Husqvarna
• Part Type: Mandrel Cover — Left Hand (LH)
• Deck Size: 54 Inch
• Material: Durable Plastic
• Condition: New / Genuine OEM