067-8090-00 Hydraulic Fluid Expansion Tank Replacement For Bad Boy Lawn Mowers Hydraulic Fluid Expansion Tank 067-8090-00 ，For Zt Elite and Maverick Models

What It Is

This is a hydraulic fluid expansion tank (part number 067-8090-00) for Bad Boy ZT Elite and Maverick zero-turn mowers. It stores excess hydraulic fluid as it heats up and expands during operation, preventing system pressure buildup and fluid leaks.

Fitment & Compatibility

• Direct fit for: Bad Boy ZT Elite (all deck sizes) and Maverick models.
• OEM replacement: Genuine Bad Boy part, not aftermarket—matches factory specs exactly.
• Check before buying: Measure your existing tank’s mounting hole spacing (center-to-center) to confirm it matches. Also verify your mower’s model year—pre-2018 models may use a different tank design. If your mower has a different hydraulic pump or reservoir setup, this tank won’t fit.
• Not compatible with: Other Bad Boy series (e.g., Outlaw, MZ) or any other brand.

Key Things to Know

• Easy swap: No special tools needed—just disconnect two hoses, remove mounting bolts, and reverse. Expect 15-30 minutes.
• Avoid over-tightening: Plastic tank is brittle when cold; hand-tighten fittings only.
• Fluid loss: You’ll lose some hydraulic fluid during replacement. Have a quart of Bad Boy hydraulic fluid or equivalent (ISO 46) ready to top off.
• Check hoses: Old hoses may be cracked or stiff—replace them at the same time to prevent future leaks.

Should You Buy It

If your Bad Boy ZT Elite or Maverick has a cracked, leaking, or warped expansion tank, this is a direct, affordable fix. It’s a simple DIY job that saves you a service call. Avoid if your mower isn’t one of the listed models—fitment is model-specific.