• GM 55579997 Clutch Master Cylinder
1 6

GM

GM 55579997 Clutch Master Cylinder

GM 55579997 Clutch Master Cylinder

$56.56
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✔ GM Genuine Parts 55579997 Clutch Master Cylinder — Genuine OEM Part
✔ Fitment: 2011–2016 Buick Regal, 2012–2017 Buick Verano, 2011–2015 Chevrolet Cruze, and 2016 Chevrolet Cruze Limited
✔ Direct replacement for factory clutch master cylinder — no modifications required
✔ Manufactured to GM’s original specifications — 15.8 mm bore diameter, plastic construction
✔ Genuine OEM quality — ensures proper clutch engagement and hydraulic pressure
✔ Replaces 55561915

 

GM Genuine Parts 55579997 Clutch Master Cylinder — for Buick and Chevrolet Models

A spongy or sticking clutch pedal, difficulty shifting gears, low clutch fluid level, or a clutch that fails to fully disengage — these are common signs that your clutch master cylinder is failing. The clutch master cylinder converts the mechanical force from the clutch pedal into hydraulic pressure, which is transmitted to the slave cylinder to disengage the clutch. A worn or leaking master cylinder can cause poor clutch operation, difficulty shifting, and potential damage to the transmission.

This is a factory-original GM clutch master cylinder (OE part number 55579997). It is a direct replacement component designed, engineered, and tested to rigorous standards and backed by General Motors. The cylinder features a plastic body with a 15.8 mm bore diameter. This is the same part sold at GM dealerships.

When to Replace

• Spongy or sticking clutch pedal
• Difficulty engaging or disengaging gears
• Low clutch fluid level
• Clutch pedal does not return to rest position
• Visible fluid leaks around the master cylinder
• Clutch pedal feels soft or goes to the floor

Product Details & Highlights

• ✔ Genuine GM OEM — not an aftermarket or Chinese replica
• ✔ Direct replacement — fits factory mounting location
• ✔ Durable plastic construction — withstands hydraulic pressure
• ✔ Manufactured to GM’s strict quality standards
• ✔ Backed by GM’s manufacturer warranty (valid through any authorized dealer)

Package Contents

• 1 × GM Genuine Parts 55579997 clutch master cylinder

FAQ

FAQ

Is this a genuine GM part or a copy?
This is 100% genuine GM OEM — in original factory packaging with the GM part number printed on the label. It is not an aftermarket brand or a replica.

Does this fit my 2013 Chevrolet Cruze?
Yes — the 2013 Cruze with the 1.4L or 1.8L engine uses this clutch master cylinder. We recommend verifying with your VIN.

Does this fit my 2014 Buick Verano?
Yes — the 2014 Verano is listed as compatible. Please verify with your VIN.

Does this fit my 2015 Buick Regal?
Yes — the 2015 Regal is listed as compatible. Please verify with your VIN.

Can I install this master cylinder myself?
Yes — it is a direct replacement. However, bleeding the hydraulic clutch system is required after installation. We recommend consulting your vehicle's service manual for the correct procedure.

Does this come with a reservoir?
No — this is the master cylinder only. The reservoir is typically part of the brake fluid reservoir assembly on these models.

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