FB56 crankcase breather filter
type: Unknown Type
Vendor: CorvairFarmer
Description:
🔍 Part Overview
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Part Number: FB56
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Type: Crankcase Breather Filter
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OEM Reference: GM #6424244
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Material: Pleated paper media in a plastic housing
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Function: Filters air entering the PCV system via the valve cover
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Common Use: Emission control systems in carbureted engines
🚗 Vehicle Fitment
This breather filter is typically found in:
| Make | Model | Years |
|---|---|---|
| Chevrolet | Camaro, Impala, Nova | 1969–1981 |
| Pontiac | Firebird, Grand Prix | 1970–1981 |
| Oldsmobile | Cutlass, 442 | 1969–1981 |
| Buick | Skylark, Regal | 1970–1981 |
| GMC | Light trucks & vans | 1970–1980 |
Fitment depends on engine type (typically small-block V8s) and valve cover configuration. Always confirm with OEM specs or VIN.
🔁 Cross-Reference Numbers
| Brand | Equivalent Part Numbers |
|---|---|
| ACDelco | FB56, 6424244 |
| GM OEM | 25042727, D1AZ-9D695-A |
| Motorcraft | FA87 |
| Fram | BA363 |
| Purolator | BPC-36 |
| Wix | 42936 |
| Baldwin | PA22191 |
These equivalents match in size and function, though housing design and media type may vary.
🛠️ Installation Tips
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Locate breather port on valve cover or air cleaner housing
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Remove old filter and clean surrounding area
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Insert new FB56 securely into breather tube or grommet
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Replace periodically to maintain proper crankcase ventilation
