We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Silver metal spin-on fuel filter cylinder with open port for bowl attachment

Baldwin Filters

Baldwin Filters BF1223-O Fuel/Water Separator

SKU CH-3C4P-7NPG4

Spin-on fuel/water separator with open port for bowl, 1 in.-14 thread and integral post seal

  • Spin-on design simplifies filter changes during routine maintenance
  • Fuel/water separation protects injectors by removing moisture from the system
  • Open port accepts a collection bowl for visible water drainage
  • Two furnished gaskets included to ensure a reliable seal on installation
  • 1 in.-14 thread size fits compatible engine mountings without adapters

Baldwin Filters BF1223-O Fuel/Water Separator

This Baldwin Filters BF1223-O is a spin-on fuel filter that separates water from fuel. It suits automotive and industrial fuel systems that require an open port for a collection bowl. The unit includes two furnished gaskets and an integral post seal for reliable sealing. It is sold new and ready for installation.

Pre-installation checks for BF1223-O

Verify that the fuel line threads match the 1 In. -14 thread size on the filter head. Confirm the bowl you plan to use has a 3 3/4-10 thread to mate with the open port. Ensure there is enough clearance for the 5 7/32 in height and 4 1/4 in outside diameter in your mounting location. Buyers who need a closed-canister filter without a bowl port should choose a different design.

Build and daily implications

The spin-on canister has a 4 1/4 in outside diameter and stands 5 7/32 in tall. An integral post seal and the two supplied gaskets simplify sealing during routine changes. The open port lets you attach a transparent bowl for visual water checks without removing the filter. The 3 3/4-10 bowl thread is a coarse pitch that resists cross-threading during frequent bowl removal.

Highlights

  • Spin-on design simplifies filter changes during routine maintenance
  • Fuel/water separation protects injectors by removing moisture from the system
  • Open port accepts a collection bowl for visible water drainage
  • Two furnished gaskets included to ensure a reliable seal on installation
  • 1 in.-14 thread size fits compatible engine mountings without adapters

Specifications

BrandBALDWIN FILTERS

Questions about this item

Does the BF1223-O fuel/water separator come with the bowl or must it be purchased separately?

The unit ships with an open port for a bowl and includes two furnished gaskets; the bowl itself is not included.

Which thread size matches my engine — the 1 in.-14 or the 3 3/4-10 bowl thread?

The filter mounts to the engine via the 1 in.-14 thread; the 3 3/4-10 thread is for attaching a separate collection bowl.

What does the 5 7/32 in height mean for clearance in a tight engine bay?

That height is the overall length of the spin-on canister, so allow at least that much vertical space plus room to spin it on and off.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.