Description
The TURBO® II Bullnose is a heavy-duty engine air precleaner designed for undercover and horizontal mounting applications in dusty and demanding operating environments.
Its centrifugal separation system removes dust, dirt and airborne debris before they reach the primary air filter, helping extend filter service life, reduce engine wear and minimise maintenance requirements.
Featuring robust metal construction and a top-down airflow design, the TURBO® II Bullnose combines effective dust separation with low airflow restriction, making it suitable for construction, agricultural, forestry and mining equipment.
Self-powered and self-cleaning, it requires no external power supply and is available in multiple configurations covering airflow requirements from 100 to 1,100 CFM.
Centrifugal Air Separation
Removes dust and airborne contaminants before they reach the primary air filter.
Top-Down Airflow Design
Directs incoming air through the upper protective screen, using centrifugal force to separate and eject contaminants through the discharge ports.
Undercover & Horizontal Mounting
Specifically designed for installations requiring undercover positioning or horizontal mounting configurations.
Self-Powered & Self-Cleaning
Operates without external power and automatically ejects separated contaminants.
Heavy-Duty Metal Construction
Robust metal construction designed for demanding operating conditions.
Low Airflow Restriction
Designed to combine effective dust separation with limited airflow restriction.
Easy Installation
Clamp-on mounting for straightforward installation on engine air intake systems.
The TURBO® II Bullnose range includes four models and eight configurations, covering airflow requirements from 100 to 1,100 CFM.
| Model | Part Number | Airflow (CFM) |
| Model 24 | 21-1024010 | 100–250 |
| Model 35 | 21-1035020 | 250–350 |
| Model 46 – 4½″ | 21-1046011 | 350–700 |
| Model 46 – 5″ | 21-1046009 | 350–700 |
| Model 46 – 6″ | 21-1046010 | 350–700 |
| Model 68 – 6″ | 21-1068015 | 700–1,100 |
| Model 68 – 7″ | 21-1068016 | 700–1,100 |
| Model 68 – 8″ | 21-1068017 | 700–1,100 |
The TURBO® II Bullnose uses centrifugal separation technology to remove airborne contaminants before they reach the engine air filter.
Its top-down airflow design combines dust separation with low airflow restriction. Manufacturer performance data and separation efficiency curves can support the selection of the appropriate model.
| Model | Efficiency Curve |
| TURBO® II Model 24 | View Curve |
| TURBO® II Model 35 | View Curve |
| TURBO® II Model 46 | View Curve |
| TURBO® II Model 68 | View Curve |