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View listing at Flyin' Miata; opens in a new tabMiata · Buyer's guide
NA/NB Miata Clutch Master, Slave Cylinder, Line & Early-1990 VIN Split
NA/NB
Current seller options
WHERE TO BUY
Open an exact listing, then confirm fitment, stock, price, and shipping with the seller before ordering.
Seller links checked . Prices and availability can change.
NA/NBSeller listing
Listed priceSee seller for current price
View listing at Flyin' Miata; opens in a new tabNA/NBSeller listing
Listed priceSee seller for current price
View listing at Flyin' Miata; opens in a new tabWhat you need to know
Flyin Miata confirms early-1990 slave split at VIN 111969. Bleeder screw size M7 x 1.0. Later 1990+ and NB cars should not be blindly mixed with earliest cars.
OEM numbers
Checked service paths are selected by fitment rather than a single Mazda chain: early-1990 slave for VIN last six 111969 or lowerlater slave for higher 1990 VINs through 2005master differs for Mazdaspeed versus non-Mazdaspeed. Slave bleeder thread is M7 x 1.0.Supersession
Fitment split, not a claimed OEM supersession: early-1990 slave at VIN 111969 or lower; mid-1990-2005 later slave; separate MSM versus non-MSM master choice.
Fitment
Flyin Miata confirms early-1990 slave split at VIN 111969. Bleeder screw size M7 x 1.0. Later 1990+ and NB cars should not be blindly mixed with earliest cars.
Aftermarket options
Checked Flyin Miata early and late slave paths plus configurable master/slave/stainless-line refresh bundle. The braided line replaces the factory rubber hose and pigtail while retaining the firewall hard line. Brake fluid is required.
Before you buy
For a 1990 car, use the last six VIN digits: 111969 or lower needs the early slave. Match MSM versus non-MSM master choice. Bleeder is M7 x 1.0. Diagnose leaks, pedal linkage and trapped air; do not reuse contaminated hydraulics. Seller scarcity exception: Retain three checked seller paths until a fourth exact listing explicitly preserves the early-1990 serial split. Count padding would create a fitment risk.
Research and fitment sources
Supersede reviewed 7 unique research sources for this guide. 3 also appear above as a seller or official action and are not repeated here; 4 additional citations follow.
Research last verified .