WQSING 10-1/2" Air Pre-Cleaner Bowl C9NN9A663A for 3"–4" Inlet Machines — Direct-Fit Replacement

WQSING's 10-1/2" air pre-cleaner bowl (part C9NN9A663A) is a direct-fit replacement component designed to restore and protect the air intake system on a wide range of agricultural and construction machines.

This replacement pre-cleaner bowl is built to the same general dimensions and mounting envelope as common OEM units so you can quickly refresh a worn or damaged air pre-cleaner housing without modifying your machine. It is compatible with numerous part numbers and models from John Deere, Ford, Case, Allis Chalmers and more, and is sized to work with 3"–4" inlet systems. Below you'll find concise answers to the typical buyer questions about fit, dimensions, installation and suitability.

Will this WQSING pre-cleaner bowl fit my tractor or combine?

Check the OEM part number on your machine or in the service manual and compare it to the list of cross-reference numbers included with this product. The WQSING bowl is designed to match many legacy and current equipment models, covering tractors, combines, harvesters and loaders from multiple manufacturers.

• Cross-reference part numbers: C9NN9A663A, R28795, 1018554M1, 277377R1 and many more.
• Vehicle compatibility includes John Deere, Ford, Case, Allis Chalmers, International, Gleaner and others.
• Works on machines with 3"–4" inlet connections—verify your inlet size before ordering.

What are the exact dimensions I should verify before purchasing?

Knowing a few key measurements prevents returns and ensures a simple swap. The bowl's stated outer and inner diameters, plus heights, let you confirm it will sit correctly in your existing pre-cleaner assembly and align with inlet piping or clamps.

• Outer diameter at top: 10-1/2" (26.7 cm).
• Side height: 3"; overall height: 4" for proper clearance.
• Top inner cone diameter: 5-9/16"; intended for 3"–4" inlet connections.

How simple is installation and what should I prepare?

Installation is typically straightforward for anyone familiar with routine air intake maintenance—no special tools are required beyond common hand tools. Replace the damaged bowl with the new one, confirm clamp and gasket condition, and resecure the inlet to ensure a tight, dust-free seal.

• Prepare standard screwdrivers or a socket set and replacement clamps if old ones are corroded.
• Inspect and replace any brittle gaskets or seals for a reliable fit.
• Verify alignment so the inlet and outlet interfaces seat flush and airtight.

Which machines and applications commonly use this bowl?

This pre-cleaner bowl is used across many agricultural and light construction applications where intake pre-cleaning prevents large debris from entering air filters. It's a frequent retrofit or spare part on older and current models across multiple brands.

• John Deere tractors and combines including models in the 4000–7000 series and specific combine/harvester models listed in the compatibility notes.
• Ford tractors and construction equipment (many TW, 2000–9000 series machines).
• Case, Allis Chalmers, International, Gleaner, Minneapolis Moline, Oliver and White equipment where OEM numbers match.

Who is this for: Owners, service technicians and parts managers looking for a reliable, cost-effective replacement pre-cleaner bowl that matches classic OEM form and fit. If you maintain older tractors, combines or construction machines and need a direct-fit bowl to replace a cracked, dented or missing pre-cleaner component, this WQSING unit is engineered to simplify replenishment while broadening compatibility with many legacy part numbers. Always confirm your machine's OEM reference before ordering to ensure correct fitment.