Based on our shop experience specializing in heavy-duty brakes and drivetrains since 1985:

• Proper Alignment: Proper alignment is critical for steadfast reliability. Ensure all mating surfaces are thoroughly cleaned and inspected prior to seating the new unit to prevent premature wear in high-stress commercial applications.
• Critical Verification: Always verify teeth count, physical dimensions, and part numbers against your core unit before installation. Visual similarity does not guarantee internal compatibility.