Air and Fuel› Fuel Pumps, Regulators and Components

Atlas Diesel

Stage 2 HPOP

$999.00

SKU: 277-9603

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Atlas 277-9603 Stage 2 HPOP is a high-pressure oil pump designed to upgrade your vehicle's oil system.

This pump offers over 25% more flow than the stock HPOP, supporting injectors up to 250/100 capacity. It is a direct drop-in replacement that includes a new mounting gasket and Viton O-rings. Every pump is flow bench tested before shipping.
Show original supplier description
The Atlas 277-9603 Stage 2 HPOP is a high-pressure oil pump engineered to elevate your vehicle's oil system performance. This upgrade is designed for versatility, supporting a range of injectors from stock to high-capacity 250/100 units, ensuring your system operates at peak efficiency. A key benefit of the Stage 2 HPOP is its remarkable increase in flow, delivering over 25% more than the stock HPOP. This enhanced flow translates directly into improved fuel delivery and overall engine performance, providing a more responsive and powerful driving experience. Whether you're seeking to boost performance for daily driving or require enhanced reliability for demanding applications, this HPOP is presented as the ideal solution. Features of the Atlas Stage 2 HPOP include a direct drop-in design, a new mounting gasket, and steel threaded inserts for durability. It also comes with new Viton O-rings for your existing fittings. Each pump undergoes rigorous flow bench testing to ensure it is ready for immediate installation. It is important to note that when sending in your core, the IPR valve and hose fittings must be removed, as these are not included with the replacement pump.

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

BrandAtlas Diesel
Part Number277-9603
CategoryAir and Fuel

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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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