Retrofit Kit — Swap Your Bypass Oil Filter Housing

$471.32

Shipping calculated at checkout.

Factory Engine Oil Capacity

0-8qt

8-16qt

16-32qt

32-64qt

Quantity

Shipping Notice: Due to high order volume, bypass oil filtration kits may take up to 5-7 business days to process before shipping.

A lower-cost way to move to an Insane Diesel housing

Keep suitable parts of your existing bypass installation and get the components needed to connect an Insane Diesel housing. On compatible installations, the supplied fitting adapters let you reuse your existing pressure and return hoses instead of purchasing a complete kit.

What’s included

1 EXTREME bypass oil filter housing matched to your engine’s factory oil capacity.
1 matching EXTREME filter element with one set of O-rings.
2 fitting adapters for the housing’s pressure and return ports.
1 mounting bracket with hardware.

Choose your housing by factory oil capacity

Select your engine’s original, manufacturer-specified oil capacity in quarts. We use this factory figure to match the appropriate EXTREME housing.

EXTREME3 / EXTREME4: The included adapters are intended for compatible ¼-inch hose setups. If your hoses are a different size, contact us before ordering.

Important: Double check your existing installation

Hose length, fitting connections and mounting space determine whether the retrofit kit will be a simple swap. If additional parts are needed, we offer a wide selection of hoses, fittings and mounting accessories to help complete your installation.

Need more than a housing swap?

For setups that require new hoses or a different mounting arrangement, starting fresh with a complete EXTREME Bypass Oil Filter Kit may be the better option. Contact us for more information.

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Compatibility & Customer Installation Videos

Use these references to identify your existing FS2500 or AMSOIL engine-oil bypass system, and watch customers connect an Insane Diesel housing to their existing installations.

Confirm your hose connections, mounting space and engine’s factory oil capacity before selecting a compatible retrofit setup.

FS2500 Compatibility

FS2500 / FS-2500 Systems

Original bowl-style / reusable-canister FS2500: original filter-element reference 135-05-1401.
FS2500 spin-on system: original filter-element reference 135-05SO-1501.

Spin-On Installation Kit References

19CS-5S00000 — Pickup Truck Engine Spin-On Install Kit.
28CS-7S00000 — Class 6, 7 and 8 Engine Spin-On Install Kit.

FS2500 Customer Housing Swap

A customer-created example of connecting an Insane Diesel housing to an existing FS2500 installation.

AMSOIL Compatibility

AMSOIL System / Kit References

Kit	Original system
BMK21	Universal Single-Remote Bypass System
BMK22*	DUAL-GARD Bypass System
BMK23*	Universal Dual-Remote Bypass System
BMK25*	Legacy Cummins Dual-Remote Bypass System
BMK26*	Ford 7.3L Dual-Remote Bypass System
BMK27*	GM 6.6L Dual-Remote Bypass System
BMK28*	Ford 6.7L Dual-Remote Bypass System
BMK30*	Heavy-Duty Bypass System
BMK31	Ford 6.0L / 6.4L Single-Remote Bypass System
BMK32	GM 6.6L Single-Remote Bypass System
BMK33	Ford 6.7L Single-Remote Bypass System
BMK34	Cummins 5.0L / 5.9L / 6.7L Single-Remote Bypass System

AMSOIL Customer Housing Swap

A customer-created example of connecting an Insane Diesel housing to an existing AMSOIL installation.

AMSOIL Bypass Filter References

Filter	Product code
EaBP90	EABP90-EA
EaBP100	EABP100-EA
EaBP110	EABP110-EA
EaBP120	EABP120-EA

*Fitment review required: Contact us before ordering for DUAL-GARD, Dual-Remote and heavy-duty installations. Dual-Remote systems combine full-flow and bypass filtration, so the installation requirements and full-flow filter arrangement need to be reviewed.

Model and filter numbers identify the original equipment. Their inclusion does not confirm that every installation uses the supplied adapters. Additional fittings, hose or mounting components may be required.

The customer-created videos show individual installations. Your hose routing, mounting location and fitting requirements may differ.

Need help with fitment? If your system is older or unlisted, send us its model number and photos of the housing and hose connections. The included EXTREME3 / EXTREME4 adapters are intended for compatible ¼-inch hose setups; contact us if your hoses are a different size.

Call Insane Diesel at (801) 901-0667.

This listing is a housing retrofit kit, not a refill element for your existing FS2500 or AMSOIL housing.

FS2500 and AMSOIL names and part numbers identify the original systems and compatibility requirements. This is an Insane Diesel product.

Questions or Need Help?
Call (801) 901-0667

EXTREME1 and EXTREME2 Filter Change Interval:

Pickup Diesel Engines: 15,000 miles, 250 hours, or 1 year, whichever comes first.
Gas Engines: 20,000 miles, 250 hours, or 1 year, whichever comes first.

EXTREME3 and EXTREME4 Filter Change Interval:

Heavy-Duty Diesel Engines: 25,000 miles, 500 hours, or 1 year, whichever comes first.

Shipping, Returns & Refund Policy

Name: 32-64qt Retrofit Kit — Swap Your Bypass Oil Filter Housing
Price: 1429.99 USD
Availability: InStock

U.S. Shipping

We may occasionally use a shipping carrier different from the one selected at checkout to improve delivery speed, protect fragile items, or reduce overall shipping and handling costs, including packaging and processing.

Expedited Shipping Policy:

Selecting expedited shipping (Overnight, 2-Day, etc.) does not include order processing time. Please allow 1–2 business days for processing, excluding weekends.

For faster delivery options, contact our Shipping Department at (801) 901-0667 Ext. 3.

International Shipping

International shipping charges are calculated at checkout and do not include customs duties, taxes, brokerage fees, or tariffs imposed by your country upon import. These fees are not controlled by Insane Diesel and vary by location and local regulations.

Customers are solely responsible for all import-related charges. We strongly recommend contacting your local customs office or postal service in advance to understand applicable fees before placing an order.

Canada: Estimated duties and taxes may be reviewed at https://www.cbsa-asfc.gc.ca/travel-voyage/dte-acl/est-cal-eng.html

Return & Refund Policy

General Return Policy

Due to the nature of aftermarket automotive components, returns are not accepted for buyer’s remorse, incorrect ordering, or compatibility issues. Customers are responsible for verifying vehicle compatibility prior to purchase. We encourage reviewing installation guides and confirming pressure and return port locations before ordering.

Products that have been installed, used, modified, contaminated with oil or fluids, or show signs of installation are not eligible for return or refund, except where required by law.

Any return request must be approved in advance. Returns sent without authorization may be refused.

Damaged, Defective or Missing Items

All products are inspected prior to shipment. If your order arrives damaged or defective, you must notify us within 7 business days of delivery and provide clear photos of the damage and packaging.

Only unused items in original condition are eligible for replacement or refund. Upon inspection and confirmation, you may choose between a replacement or a full refund.

Missing components must be reported within 15 days of the delivery date. Each order is packed individually to help ensure all components are included and to maintain quality control. A packing slip/manifest is included with every shipment; please review it upon delivery to verify that all components were received.

Approved Returns & Refunds

In rare cases where a return is approved (outside of damage on arrival), requests must be made within 30 days of delivery.

Approved refunds will be issued minus:

Return shipping costs
Original outbound shipping costs (even if free shipping was offered)
Payment processing fees charged by Shopify (approximately 2.4–2.5% + $0.30)

Refunds are issued to the original payment method after returned items are received and inspected.

Contact Us

If you have questions about shipping, returns, or refunds, please contact us at support@insanediesel.com.

Anodized Finish:
Our housings feature a high-quality anodized finish. Because anodized colors can photograph differently under various lighting conditions, the color shown online may appear slightly different in person. Minor tone, shading, or finish variation can also occur naturally from the anodizing process and is a normal characteristic of this type of premium finish.

Product Images:
Product images, especially kit photos, may show earlier versions of certain components. Some parts have since been updated to newer, improved generations and may appear slightly than images. These are the main components that have changed:

• Oil filler caps no longer come with brass swivel center. Replaced with new generation cap that works with our upgraded swivel fittings.

• Fittings in images may have changed slightly as we rolled out with improved versions for simplified installation.

• Steel or brass fittings in images may have changed to our new black fittings to reduce the need for multiple connection points.

• Some mounting brackets have been updated for easier and more convenient access.

Images will be updated soon. Thank you for your patience!