Mazda Miata NA8/NB Front Crank Seal Installer — BP 1.8L — Made in USA

Make front main seal installs fast and precise. This driver helps you press the front crankshaft seal squarely into the timing cover on NA8 (1994–1997) and NB (1999–2005) Miatas with the BP 1.8L engine.

Why You’ll Like It

• NA8/NB Specific Fit: Designed around the BP 1.8L crank snout & timing cover bore

• Square, Even Seating: Guides the seal in straight to prevent leaks and premature wear

• Two Ways to Drive: Use the crankshaft bolt to draw the seal in slowly, or make gentle, even taps with a mallet

• Durable Print: High-strength PLA+ construction for stiffness and reliability

• Made in USA

Important Usage Notes (Read)

• No Built-In Depth Stop: Stop when the seal is flush with the cover—follow the factory service manual.

• Keep the tool and seal square as you drive; re-square with light taps if needed.

• Lightly oil the seal lip and bore before installation.

Confirmed Compatibility

• Chassis: NA8 (1994–1997), NB (1999–2005), incl. Mazdaspeed (2004–2005)

• Engines: 1.8L BP-ZE / BP-4W / BP-Z3 (VVT)

Not for 1.6L NA6 (1990–1993), NC (2006–2015), or ND (2016+).

How To Use

1. Remove old seal; clean and inspect the bore

2. Lightly oil the new seal lip/bore

3. Align the seal; place tool against the seal face

4. Install the crank bolt and tighten gradually to draw the seal in square (or tap gently and evenly)

5. Stop when flush; verify even seating all the way around

What’s Included

• (1) Front Crank Seal Installer Tool

Notes

• COLOR MAY VARY FROM PHOTOS

• 3D-printed specialty tool; cosmetic layer lines are normal and do not affect function

• For installation use only; keep away from high heat/solvents

Keywords 
Miata front main seal installer, NA8 NB crank seal driver, MX-5 BP 1.8 front crankshaft seal tool, BP-ZE BP-4W BP-Z3, Mazdaspeed Miata front seal installer, Miata timing cover seal tool.