K&N 56-9327 Custom Racing Air Cleaner Assembly for SU HS6 1.75" Carburetors

Vehicle Fitment

• Universal fitment for vehicles equipped with SU HS6 1.75" (1-3/4") carburetors
• 1962-1964 Austin Healey 3000 Mark II BJ7
• 1965-1967 Triumph TR4A
• 1967-1968 Triumph TR250 (SU conversion)
• 1968-1976 Triumph TR6 (SU conversion)
• 1961-1970 Volvo 122S/Amazon with B18B/B18D engine
• 1961-1969 Volvo P1800/1800S with B18B/B18D engine
• 1967-1974 Volvo 140 Series (142, 144, 145) with B18B/B20B engine
• 1961-1965 Volvo PV544 with B18D engine

Fitment Notes

• Designed specifically for SU HS6 carburetors with 1.75" (44mm) throat diameter
• Offset mounting hole pattern for HS6 carburetor flange
• Bolts directly to carburetor, replacing standard air cleaner assembly and elbow
• Does NOT fit smaller SU HS2 (1.25") or HS4 (1.5") carburetors
• Does NOT fit larger SU HD8 (2.0") carburetors as used on Austin Healey 3000 BJ8
• Not CARB legal; not for sale or use in California
• Verify carburetor model before ordering; HS6 has 4-bolt mounting pattern

Features

• High-flow cotton gauze filter media increases horsepower and acceleration
• Round tapered (conical) design optimizes airflow into carburetor
• Show-quality chrome top plate and base for classic appearance
• Washable and reusable; no replacement filters to buy
• Pre-oiled and ready to install out of the box
• Superior filtration protects engine from dirt and debris
• Complete bolt-on assembly includes all mounting hardware

Specifications

• Part Number: 56-9327
• Brand: K&N Engineering
• Type: Custom Racing Air Cleaner Assembly
• Carburetor Fitment: SU HS6 1.75" (1-3/4")
• Filter Shape: Round Tapered (Conical)
• Filter Material: Oiled Cotton Gauze
• Filter Color: Red
• Air Filter Height: 2.09 inches (53mm)
• Inlet/Neck Flange Diameter: 1.656 inches (42mm)
• Overall Height: 2.25 inches (57mm)
• Top/Base Finish: Chrome
• Weight: 1.1 lbs (0.5 kg)
• Replacement Filter Element: K&N E-9156
• Warranty: K&N 10-Year/Million Mile Limited Warranty

Included Components

• 1 K&N High-Flow Cotton Gauze Air Filter Element (Pre-Oiled)
• 1 Chrome Top Plate
• 1 Chrome Base Plate
• Mounting Hardware

Product Description

The K&N 56-9327 Custom Racing Air Cleaner Assembly delivers maximum airflow and filtration for vehicles equipped with SU HS6 1.75-inch carburetors. This complete bolt-on assembly replaces the factory air cleaner with K&N's proven oiled cotton gauze filtration technology, increasing horsepower and throttle response while maintaining excellent engine protection. The round tapered design smooths airflow into the carburetor throat for improved performance. Show-quality chrome top and base plates provide a classic appearance suited to vintage British and Swedish vehicles. The filter element is washable and reusable, backed by K&N's 10-Year/Million Mile Limited Warranty. Factory SU HS6 applications include the Austin Healey 3000 BJ7, Triumph TR4A, and Volvo models with twin-carb B18 and B20 engines including the 122S, P1800, and 140 series. Also popular as a performance upgrade when converting Zenith Stromberg-equipped vehicles to SU HS6 carburetors. Replacement filter element K&N E-9156 available separately.