DEEFILL oil filter adapter assembly on engine, enabling larger 1 1/8-16 filters.
DEEFILL adapter installation shown performed by hand for quick upgrades.
DEEFILL SUS304 stainless steel construction ensures precise threads and reliable sealing.
DEEFILL precision machined threads provide a snug, leak-free fit.
DEEFILL compatibility with CAT 1R-1807 and Duramax engines shown for reference.
DEEFILL 1-1/8-16 threads provide a secure mating surface.
DEEFILL packaging includes the 13/16-16 to 1-1/8-16 adapter.
DEEFILL oil filter adapter assembly on engine, enabling larger 1 1/8-16 filters.
DEEFILL adapter installation shown performed by hand for quick upgrades.
DEEFILL SUS304 stainless steel construction ensures precise threads and reliable sealing.
DEEFILL precision machined threads provide a snug, leak-free fit.
DEEFILL compatibility with CAT 1R-1807 and Duramax engines shown for reference.
DEEFILL 1-1/8-16 threads provide a secure mating surface.
DEEFILL packaging includes the 13/16-16 to 1-1/8-16 adapter.

DEEFILL Oil Filter Adapter 13/16-16 to 1-1/8-16 • SUS304 Stainless, Duramax CAT 1R-1807 Compatible

Overview The DEEFILL Oil Filter Adapter converts your engine’s 13/16-16 port to accept larger 1 1/8-16 filters,...
Vendor: DEEFILL
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£39.93
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DEEFILL oil filter adapter assembly on engine, enabling larger 1 1/8-16 filters.

DEEFILL Oil Filter Adapter 13/16-16 to 1-1/8-16 • SUS304 Stainless, Duramax CAT 1R-1807 Compatible

£39.93
DEEFILL oil filter adapter assembly on engine, enabling larger 1 1/8-16 filters.
DEEFILL adapter installation shown performed by hand for quick upgrades.
DEEFILL SUS304 stainless steel construction ensures precise threads and reliable sealing.
DEEFILL precision machined threads provide a snug, leak-free fit.
DEEFILL compatibility with CAT 1R-1807 and Duramax engines shown for reference.
DEEFILL 1-1/8-16 threads provide a secure mating surface.
DEEFILL packaging includes the 13/16-16 to 1-1/8-16 adapter.

DEEFILL Oil Filter Adapter 13/16-16 to 1-1/8-16 • SUS304 Stainless, Duramax CAT 1R-1807 Compatible

£39.93
Description
Description
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Overview

The DEEFILL Oil Filter Adapter converts your engine’s 13/16-16 port to accept larger 1 1/8-16 filters, unlocking more filtration media and capacity without any engine modification. CNC-machined from solid SUS304 stainless steel, it offers precise fit and outstanding corrosion resistance. The threads seat cleanly and seal reliably, even under sustained oil pressure and heat, while installation remains accessible with common hand tools.

Built for durability in demanding conditions, this adapter supports higher flow filtration for diesel and heavy‑duty applications. You gain potential benefits like increased filter media, improved filtration capacity, and the flexibility to run 1 1/8-16 filters from CAT, Duramax, Volvo, AGCO, Baldwin, NAPA and other common 1 1/8-16 options. If you are unsure about compatibility, verify your current port size to confirm 13/16-16 in and 1/1/8-16 out before purchasing.

Key benefits

  • Unlock larger, higher-flow filters without modifying your engine, enabling broader filtration capacity.
  • Quality SUS304 stainless steel construction for corrosion resistance and long-term reliability.
  • Precision CNC machining delivers clean threads and a flat mating surface for dependable sealing.
  • Leak-free performance from first install with carefully engineered, hand-friendly threading.
  • Broad compatibility with Duramax, CAT 1R-1807, Volvo, AGCO, Baldwin, NAPA and more.
  • Suitable for diesel upgrades, agricultural equipment, and commercial machinery where enhanced filtration is a consideration.

Easy installation and use cases

Installing the adapter is straightforward: thread it onto your existing 13/16-16 port by hand, then snug with a wrench. No permanent engine modifications are required, and the robust SUS304 threads help maintain a clean seal under oil pressure and heat.

  • Real-world scenarios include upgrading a Duramax diesel for higher filtration capacity, servicing CAT-powered heavy equipment, or equipping Volvo trucks with larger filters.
  • Fit verification is simple: confirm the current port is 13/16-16 in and the new filter uses 1 1/8-16 threads.

What’s included

Package includes one DEEFILL 13/16-16 to 1 1/8-16 oil filter adapter ready for installation with standard hand tools.

FAQ

Q: What engines and filters are compatible?

A: Compatible with 13/16-16 ports and 1-1/8-16 filters, including Duramax, CAT 1R-1807, Volvo, AGCO, Baldwin, NAPA, and other 1-1/8-16 options.

Q: Is installation difficult or does it require a shop?

A: No special tools are needed; install with common hand tools, and the SUS304 build helps ensure a clean, reliable seal.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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