Parts for Detroit Diesel 471 Non-Turbo - (2 Valve Head Type) - Blower Section

Parts for Detroit Diesel 4-71 Non-Turbo (2-Valve Head) – Blower Section

The Detroit Diesel 4-71 Non-Turbo (2-Valve Head) engine depends on its Roots-type blower to maintain efficient air scavenging and strong combustion. Since this two-stroke engine relies entirely on the blower to clear exhaust and supply fresh air, proper maintenance or replacement of blower components is critical. Diesel Pro Power offers complete, ready-to-install blower assemblies and all related parts to restore power, fuel efficiency, and reliability.

Rebuilt Detroit Diesel 4-71 Blowers

Choose between Left-Hand (LH) and Right-Hand (RH) configurations depending on your engine’s installation:

• Left-Hand Blower – Mounts on the left side of the engine when viewed from the flywheel.

• Right-Hand Blower – Mounts on the right side.

Each rebuilt blower is precision-remanufactured using new bearings, seals, and gaskets, and rotor timing is calibrated to factory specifications for optimal pressure and airflow. Sold with a refundable core deposit, these blowers deliver OEM-quality performance and long-term dependability.

Blower Repair & Installation Kits

• Blower Repair Kit (Series 71) – Contains bearings, seals, and gaskets to restore sealing integrity and internal pressure. A cost-effective solution for refreshing a serviceable housing.

• Blower Installation Gasket Kit (4-71) – Includes all necessary gaskets for blower-to-block and drive cover reinstallation, preventing air or oil leaks and maintaining correct scavenging pressure.

Shafts, Couplings & Drive Hardware

• 48-Spline Blower Coupling – Transfers torque smoothly from the engine gear drive to the blower input shaft.

• Blower Shafts (7.81"–8.87") – Available in multiple lengths to fit various front cover configurations. Precision-machined and balanced to minimize vibration.

• Blower Shaft Retainer – Locks the shaft in place to prevent endplay.

• Rotor Gear Hub – Maintains proper rotor alignment and timing.

• Hydraulic Pump Drive Hub – Designed for inline 71-series engines to drive hydraulic accessories such as pumps on marine applications.

Sealing & Lubrication Components

Reliable lubrication and tight sealing are key to blower longevity:

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

• Blower Drive Gear Cover Gasket – Prevents oil leakage around the blower drive.

• Blower Screen & Block Gaskets – Maintain airtight integrity between blower and block.

• End Plate & Governor Gaskets – Complete coverage for drive and housing connections.

• Blower Seals & Sleeves – Prevent oil migration into the intake air.

Air Intake & Sound Control

• Air Cleaner (3" Inlet) – Compact, high-flow design for industrial installations.

• Marine Silencer (4-71) – Reduces intake noise and vibration while maintaining airflow. Built from corrosion-resistant materials suitable for marine environments.

Accessories & Finishing Supplies

• Shutdown Solenoids (12V / 24V) – Dependable fuel shutoff for safety or maintenance.

• Teleflex Morse Terminals (¼") – Durable linkage connectors for throttle and governor controls.

• Detroit Green Paint – Original color finish, heat-resistant and protective.

• High-Tack Gasket Spray – Ensures proper gasket adhesion and leak-free sealing.

Why Buy from Diesel Pro Power

Exact Fit for the 4-71 (2-Valve Head)
All components meet or exceed OEM standards for precise alignment and durability.

Trusted by Over 40,000 Customers
Professionals worldwide rely on Diesel Pro Power for Detroit Diesel parts, with fast shipping to over 180 countries.

Expert Guidance
Our specialists assist you in identifying correct blower rotation, shaft length, and installation requirements for your specific engine model.

Complete Catalog
From rebuilt blowers to couplings, gaskets, and silencers—everything you need is available in one place.