Drivetrain› Manual Transmissions and Components

Boundary Pump Division

4130 Chrome Moly Billet Steel Gear Set

$239.00

SKU: BPD-3.5/3.7

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

These gears are proven in applications up to 1500 HP and are recommended for any build exceeding 500 HP. They are machined from heat-treated 4130 chrome moly billet steel in matched sets and are made in the USA.
Show original supplier description
The Boundary Pump Division Billet Oil Pump Gear offers a significant upgrade for Ford 3.5L EcoBoost and 3.7L Cyclone V6 engines. Constructed from heat-treated 4130 chrome moly billet steel, these gears are precision machined in matched sets to ensure optimal performance and reliability. The company stands by their quality, offering a "guaranteed forever" warranty. This product is trusted by builders, having been used in applications successfully producing up to 1500 horsepower. It is specifically recommended for any engine build planned to operate above 500 horsepower, ensuring robust lubrication under demanding conditions. The gears are manufactured in the USA and come with blueprinting paperwork.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandBoundary Pump Division
Part NumberBPD-3.5/3.7
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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