Parts for Detroit Diesel 371 Non-Turbo - (2 Valve Head Type) for Australia - Blower Section

Parts for Detroit Diesel 3-71 Non-Turbo (2-Valve Head) – Blower Section

The Detroit Diesel 3-71 Non-Turbo (2-Valve Head) engine uses a Roots-type blower as the core of its scavenging system. Because this two-stroke engine depends entirely on forced air delivery for proper combustion, maintaining a tight, balanced, and leak-free blower is essential. This catalog features complete rebuilt blowers, rebuild kits, couplings, gaskets, seals, and accessories to keep your 3-71 performing with the strong, even airflow that made the Series 71 engines legendary.

Rebuilt 3-71 Blowers

Available in Left-Hand (LH) and Right-Hand (RH) configurations:

• LH Blower – Mounts on the left side of the engine when viewed from the flywheel.

• RH Blower – Mounts on the right side of the engine.

Each rebuilt blower is precision-remanufactured to OEM specifications. Units are fully disassembled, inspected, and rebuilt with new bearings, seals, and gaskets, and the rotor lobes are re-timed to exact Detroit Diesel standards. All blowers are bench-tested for proper pressure and end-play, ensuring long service life. Each is sold with a refundable core deposit.

Blower Kits

• Blower Repair Kit (Series 71 – Natural) – Includes all the internal seals, gaskets, and bearings needed to restore a worn but serviceable housing. Helps recover lost boost pressure and eliminate rotor noise.

• Installation Gasket Kit (3-71) – Contains the blower-to-block, drive, and cover gaskets required for proper sealing. These prevent air and oil leaks that can cause low compression and power loss.

Drive Components & Shafts

• 48-Spline Blower Coupling – Transfers torque from the gear train to the blower input with perfect alignment.

• Blower Shafts (6.18" and 7.08") – Precision-machined replacements for the 3-71 drive assembly. Balanced and hardened for smooth operation and long wear.

• Blower Shaft Retainer – Holds the shaft securely in position to maintain correct timing.

• Rotor Gear Hub – Synchronizes rotor rotation for even airflow between cylinders.

• Hydraulic Pump Drive Hub (Aluminum) – Allows connection to an external pump on inline Series 71 engines, commonly used in marine or industrial applications.

Sealing, Lubrication & Gasket Components

Every connection point on a 3-71 blower must stay sealed to maintain efficiency. Diesel Pro Power provides every gasket and seal you’ll need:

• Tube Assemblies & Oil Supply Lines – Supply clean oil to blower bearings and the governor drive.

• Drive Gear & End Plate Gaskets – Prevent oil seepage around the gear housing.

• Blower-to-Block and Screen Gaskets – Maintain airtight seals to preserve pressure balance in the airbox.

• Governor Gaskets (Drive, Housing, Spring Cover) – Ensure the governor remains isolated from air leaks.

• Blower Seals & Sleeves – Keep oil out of the air stream and extend bearing life.

Air Intake & Accessories

• Industrial Air Cleaner (3" inlet) – Durable filter designed for dust-heavy environments, protects the blower from debris.

• Marine Silencer (3-71) – Reduces intake noise on marine installations without restricting airflow.

• Air Box Breather Valve Assembly – Regulates crankcase pressure and limits oil mist discharge.

Electrical & Finishing Components

• Shutdown Solenoids – 12V / 24V – Heavy-duty units for quick and reliable engine shut-off in maintenance or emergency situations.

• Teleflex Morse Terminals (¼") – Ball-joint and clevis connectors for marine throttle and governor linkages.

• Detroit Green Paint – Authentic OEM color, heat-resistant and corrosion-protective.

• High-Tack Gasket Spray – Improves gasket adhesion and seals against vibration leaks.

Why Buy from Diesel Pro Power

Exact Fit for the 3-71 (2-Valve Head) – Every component is built to OEM standards for perfect fit and dependable operation.
Global Reach – Diesel Pro Power ships fast to over 180 countries, with 40,000+ satisfied customers worldwide.
Technical Expertise – Get help identifying blower rotation, shaft length, or gasket compatibility for your specific setup.
Complete Coverage – One source for everything you need—blowers, kits, seals, silencers, and accessories.