P551329 Spin-On Fuel Water Separator Filter

Donaldson P551329 Fuel Water Separator Cross Reference | Replacement Filter

The P551329 Spin-On Fuel Water Separator Filter is an aftermarket replacement filter designed for diesel fuel systems that require reliable separation of water and contaminants. With a 93 mm outer diameter, 13/16-18 UN thread and 155.3 mm overall length, this replacement filter is suitable for a wide range of heavy-duty engines and equipment applications. Public product specifications identify P551329 as a spin-on water separator with 99% efficiency at 13 micron and 95% emulsified water efficiency. 

For distributors, filter retailers, aftermarket service companies and wholesale buyers, the P551329 provides a practical Diesel Fuel Water Separator Replacement option for equipment using a compatible filter head. Its spin-on design helps simplify filter replacement during routine service, while the water-separation function helps reduce the risk of water and solid contaminants reaching sensitive fuel-system components.

This filter is commonly cross-referenced with part numbers from Cummins, Case IH, Caterpillar, Fleetguard, Luberfiner, Bosch, Hifi, JCB, Komatsu, New Holland, Massey Ferguson and other equipment or filtration brands. Cross-reference numbers are provided for identification and sourcing purposes. Buyers should verify thread, gasket dimensions, filter length and application requirements before ordering.

Technical Specifications

Key Features and Purchasing Benefits

Efficient Water and Contaminant Separation

Feature: The filter is designed as a fuel water separator for diesel fuel systems. Advantage: It helps separate water and particulate contamination from fuel before the fuel reaches downstream components. Benefit: Cleaner fuel can help reduce contamination-related service problems and support stable equipment operation. Evidence: Published specifications report 99% efficiency at 13 micron and 95% emulsified water efficiency. 

Convenient Spin-On Replacement

Feature: P551329 uses a spin-on filter format. Advantage: The replacement process is straightforward when the existing filter head and sealing dimensions match. Benefit: Service teams can reduce unnecessary installation work and keep routine maintenance more organized. Evidence: The product is documented as a Spin-On Water Separator filter.

Wide Aftermarket Cross-Reference Coverage

Feature: P551329 is associated with a broad range of replacement numbers. Advantage: This gives wholesalers and service companies more options when sourcing replacement filtration products. Benefit: Buyers can use cross-reference data to simplify product identification and purchasing. Evidence: Published cross-reference databases list equivalents including Fleetguard FS1280, Luberfiner LFF3417, Baldwin BF1280, Hifi SN5038, Mann-FILTER WK9165X and Wix 33357.

Donaldson Fuel Water Separator Cross Reference

The following part numbers are supplied as general cross-reference information for purchasing and product identification. They are not a guarantee of interchangeability for every application. Always compare the filter specifications and the original equipment application before placing an order.

Popular Aftermarket Cross References

Diesel Fuel Water Separator Replacement for B2B Buyers

This replacement filter is intended for professional sourcing rather than individual consumer use. It can support inventory programs for retailers, aftermarket service providers, wholesalers and filter stores that need a dependable source for diesel filtration products.

The P551329 reference number can also help purchasing teams identify compatible alternatives when an original filter is unavailable or when a customer needs a replacement by part number. Because cross-reference databases may contain multiple application numbers, professional buyers should confirm the filter head, thread, gasket and dimensional requirements before purchase.

Fuel Water Separator Maintenance

Regular filter inspection and replacement are important parts of diesel fuel-system maintenance. Water and particulate contamination can affect fuel-system components, so service teams should follow the equipment manufacturer's maintenance schedule and inspect the filter when fuel contamination, reduced performance or abnormal operating conditions are suspected.

When replacing a spin-on separator, verify the replacement part number and physical specifications before installation. The gasket should seat correctly, the filter should be installed according to the equipment manufacturer's instructions, and any water-draining procedure should follow the applicable service manual.

Custom Fuel Water Separator and OEM ODM Service

CHINA EVERLASTING PARTS CO., LIMITED supports OEM and ODM fuel water separator requirements for professional buyers. If you need a private-label filter, custom packaging, special specifications or a replacement based on an existing sample, our team can discuss your application and sourcing requirements.

Our standard MOQ for this product is 60 pcs. Neutral packaging and customized packaging can be discussed according to order requirements. For wholesale projects, retailers and service companies, please provide your required quantity, target part number, application and packaging preference when requesting a quotation.

Five Reasons for Choosing China Everlasting Parts

1. Aftermarket Filter Expertise: We specialize in fuel, oil, air, hydraulic and fuel water separator filtration products.
2. Cross-Reference Support: Our product information is organized around widely used aftermarket and equipment part numbers.
3. B2B Wholesale Supply: Our products are designed for distributors, retailers, filter stores and professional service companies.
4. OEM/ODM Capability: We support private-label and customized filtration projects according to customer requirements.
5. Flexible Packaging: Neutral and customized packaging options are available for different wholesale programs.

Customer Testimonials

Frequently Asked Questions

What is the P551329 filter?

P551329 is a spin-on fuel water separator filter reference used for diesel fuel filtration applications. Published specifications identify it as a water separator with a 13/16-18 UN thread.

What is the Donaldson Fuel Water Separator Cross Reference for P551329?

Commonly listed cross references include Fleetguard FS1280, Luberfiner LFF3417, Baldwin BF1280, Hifi SN5038, Mann-Filter WK9165X and Wix 33357. Always verify the physical specifications and application before ordering. 

Can you supply a Diesel Fuel Water Separator Replacement in bulk?

Yes. The MOQ for this P551329 replacement is 60 pcs. Wholesale buyers can contact us with the required quantity, packaging and target market for quotation.

Do you provide Custom Fuel Water Separator products?

Yes. We support OEM/ODM and customized filtration projects, including private-label requirements and customized packaging subject to project specifications.

How should I confirm compatibility?

Compare the original part number, filter-head thread, gasket dimensions, filter dimensions and equipment application. If you send us the original filter number and specifications, our sales team can help check the available replacement option.

Company Introduction

CHINA EVERLASTING PARTS CO., LIMITED is a professional high-quality filters manufacturer and aftermarket filtration supplier. Our main product range includes Air Filters, Air Cleaner Filters, Air Dryers, Ventilation Filters, Breather Filters, Oil Filters, Fuel Filters, Hydraulic Filters, Fuel Water Separators, Air Oil Separators and Filter Assemblies.

We focus on providing practical filtration solutions for international B2B buyers. Our product range supports distributors, wholesalers, retailers, filter stores and equipment service companies looking for replacement filtration products, bulk supply and customized sourcing solutions. OEM and ODM projects are welcome.

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