Description
Product Overview
The Milodon oil pump shaft is engineered from premium 4130 chrome‑moly steel, offering exceptional tensile strength and durability for high‑performance engines. Designed specifically for 383‑440 and Hemi applications, the shaft features a distributor shaft and a bronze gear that meshes smoothly with roller camshafts. Induction heat‑treated ends provide enhanced wear resistance, extending service life and maintaining optimal oil pressure under demanding conditions.
Usage
This shaft is ideal for performance enthusiasts, rebuild projects, and daily drivers seeking reliable lubrication. Install it in classic muscle cars, modern Hemi builds, or any engine requiring a robust oil pump solution. Its precise dimensions (9.75 x 5.88 x 2.25 inches) ensure a direct fit without modifications, making it suitable for both professional shops and DIY mechanics.

Why Choose Us
Milodon’s reputation for quality automotive components backs this oil pump shaft. Each unit undergoes rigorous testing, including heat‑treatment verification and dimensional inspection, guaranteeing consistency across batches. The bronze gear assembly eliminates the common breakage of stock units, providing smoother operation and reduced maintenance costs. With a lightweight design at just 1.04 pounds, it adds minimal mass while delivering maximum performance.
Key Features
- 4130 chrome‑moly steel shaft for superior strength and fatigue resistance
- Bronze gear compatible with roller camshafts, reducing wear and noise
- Induction heat‑treated ends to minimize wear and extend service intervals
- Direct fit for 383‑440 and Hemi engines, no modifications required
- Lightweight construction (1.04 lb) for easy handling and installation
FAQ
Is this shaft compatible with all Hemi models?
Yes, the shaft is designed to fit all standard Hemi engines as well as 383‑440 configurations without the need for additional machining.
Do I need to replace the oil pump housing when installing this shaft?
No, the shaft is a direct replacement for the stock unit and works with the existing housing, provided the housing is in good condition.
What maintenance is required after installation?
Regular oil changes using the manufacturer’s recommended oil grade are sufficient. Inspect the gear and shaft for wear during routine service intervals.
Can this shaft be used in high‑performance racing applications?
Absolutely. The 4130 chrome‑moly construction and heat‑treated ends are engineered to handle the increased stresses of performance and racing environments.
What is the warranty on this product?
Milodon offers a limited one‑year warranty covering defects in material and workmanship.







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