Description
MC0421 Oldsmobile, Pontiac Clutch Master Cylinder – 2.3L 4 Cyl, 2.0L 4 Cyl
SKU: MC0421
“Precision-engineered drivetrain components for heavy-duty fleet reliability and uncompromising performance.”
| Specification | Detail |
|---|---|
| Part Number | MC0421 |
| Category | Master Cylinder |
| Engine Fitment | 2.3L 4 Cyl, 2.0L 4 Cyl |
| Remarks | Quad 4 With External Slave, Isuzu 5-Speed, 8th Digit of VIN is 3, Quad-4, Quad-4; w/ External Slave, Quad-4; SOHC 8th Digit Of VIN is 3 |
Vehicle Fitment Summary
Fits: Oldsmobile Achieva (1992-1994), Oldsmobile Calais (1987-1991), Pontiac Grand Am (Front-Wheel Drive) (1987-1994)
🛠️ Expert Installation & Field Note
Based on our shop experience specializing in heavy-duty brakes and drivetrains since 1985:
- Proper Alignment: Proper alignment is critical for steadfast reliability. Ensure all mating surfaces are thoroughly cleaned and inspected prior to seating the new unit to prevent premature wear in high-stress commercial applications.
- Critical Verification: Always verify teeth count, physical dimensions, and part numbers against your core unit before installation. Visual similarity does not guarantee internal compatibility.
Availability & Logistics
In stock and ready for immediate professional fulfillment. Standard ground shipping available from our Texas distribution center.



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