Description
Overview:
The Gear Housing 318051-2 is a genuine Makita replacement part for selected 115-125 mm angle grinders, including the BGA450 and BGA452. Made from hard-wearing die-cast aluminium alloy, it supports and protects the grinder's gear train, keeps bearings correctly aligned, and helps dissipate heat during continuous use. This housing restores structural integrity after impact damage or wear, maintaining smooth gear engagement and consistent spindle performance. Designed to OEM specification, it is a direct, model-specific fit that keeps your tool working as intended. It supersedes earlier Makita part 317814-3 and is suitable for both cordless and corded Makita grinders in this family. As a Genuine Makita Part, it offers reliable compatibility, long service life, and dependable operation in workshop, site, and fabrication environments.
Key Features:
- Genuine Makita Part for assured fit and compatibility with specified models
- Durable die-cast aluminium alloy body for strength and heat dissipation
- Precisely machined interfaces maintain gear alignment and reduce vibration
- Direct replacement for worn or damaged housings; uses existing fasteners and seals
- Manufactured to OEM standards for reliability and consistent performance
- Protects bevel gears and bearings from debris, impact, and overload stress
- Helps restore smooth running, extending overall tool life
- Replaces previous OEM number 317814-3 for hassle-free cross-reference
- Suitable for heavy site use, fabrication, and maintenance tasks
Typical Applications:
Restoring the gear head of Makita angle grinders used for cutting, grinding, and surface preparation on steel, non‐ferrous metals, stone, and masonry. Ideal for repairs after drops, casing cracks, excessive heat build-up, or misalignment that causes noise or rough running. Suitable for workshop maintenance, site repairs, plant rooms, and tool hire servicing.
Also known as:
Gear casing, gear head, front housing, gearbox cover, transmission housing, grinder nose, angle grinder head, upper casing, drive housing, front case.
Fits Models:
9558NB, 9558NBR, BGA450, BGA452
Alternate Part Numbers:
317814-3, 3180512, 3178143
