Husqvarna Motor Assembly OEM #577315802

Restore the full cutting power of your Husqvarna battery chainsaw with the genuine OEM BLDC D70 Motor Assembly (Part #577315802). This is a genuine OEM Motor Assembly BLDC D70 — the heart of Husqvarna’s professional-grade battery chainsaw lineup. When your saw loses power, runs inconsistently, or fails to start, this direct-fit replacement motor brings it back to factory performance.

Compatible Models:

• Husqvarna 436Li, 536Li XP, 536LiXP
• Husqvarna T536LiXP, K535i Disc Cutter

Key Features:

• Genuine OEM BLDC (Brushless DC) Motor – Factory-engineered to exact Husqvarna specifications for guaranteed fit and performance
• 25% More Efficient Than Brush Motors – This in-house developed, advanced brushless motor is 25% more efficient than a standard brush motor, providing a high and consistent torque
• High & Consistent Torque Output – Provides a high and consistent torque for fast, smooth cutting performance
• Quiet, Low-Vibration Operation – Fewer vibrations, zero fumes, and push-button startup; electric saws don’t require engine maintenance, saving you time and money
• Built for Professional Demands – Ideal for professionally oriented users who want a lightweight, high-performance chainsaw — perfect for carpenters, contractors, tree care workers and olive farmers
• Direct-Fit Replacement – Engine complete with fan; engineered to drop in without modifications

Why Replace With Genuine OEM? The BLDC D70 is a precision-engineered brushless motor specifically calibrated for the 436Li and 536LiXP chainsaw platforms. Aftermarket substitutes cannot replicate the exact winding specifications, torque curve, or electronic integration of this factory motor. Only a genuine Husqvarna OEM motor assembly restores the performance, efficiency, and safety your saw was designed to deliver.

What Is a BLDC Motor? BLDC stands for Brushless Direct Current. Unlike traditional brush motors, a brushless motor has no physical contact points to wear out — meaning longer service life, less heat, more consistent power delivery, and dramatically reduced maintenance needs. It’s what makes Husqvarna battery chainsaws a true professional-grade alternative to gas-powered equipment.

Part Details:

• OEM Part Number: 577315802
• Also Listed As: Motor Assy BLDC D70 / Engine Complete with Fan
• Motor Type: BLDC (Brushless DC)
• Fits: Husqvarna 436Li, 536LiXP, T536LiXP, K535i Battery Chainsaws & Disc Cutter