FF5643 Secondary Fuel Filter for Mack ASET & E-Tech Engines
FF5643 secondary fuel filter for Mack ASET & E-Tech engines (NOT MP7/MP8). 7 micron, M30x1.5 thread. Cross reference BF7773, WIX 33644. Factory direct.
Description
This filter fits Mack ASET and early E-Tech engines — it does NOT fit Mack MP7/MP8 engines, which use a different fuel filter architecture.
The FF5643 fuel filter is a spin-on secondary (final-stage) fuel filter with a 7-micron rating, used as the downstream filter on Mack ASET and later E-Tech engines. It captures fine particulate contamination before fuel reaches the injection system, protecting sensitive fuel system components. IXIN Filter manufactures this filter to OEM-equivalent specifications, giving distributors and fleet operators a reliable, factory-direct alternative for scheduled fuel filter replacement.
As an IATF 16949-certified filter manufacturer, IXIN supplies the FF5643 fuel filter to distributors and service centers in 60+ countries, with consistent batch quality and full traceability for bulk and OEM orders.
Product Specifications
| Attribute | Detail |
|---|---|
| Product Type | Spin-On Secondary Fuel Filter |
| Overall Height | 180.85 mm (7.12 in) |
| Largest Outer Diameter | 108.2 mm (4.26 in) |
| Thread Size | M30 x 1.5-6H INT |
| Micron Rating | 7 microns |
| Certification | IATF 16949 |
Compatible Engines
- Mack ASET Engine
- Mack E-Tech Engine (early/later production)
FF5643 Cross Reference / OE Replacement Numbers
The FF5643 fuel filter is a direct cross reference and replacement for the following OE and aftermarket part numbers:
| Brand / Source | Part Number |
|---|---|
| Fleetguard/Cummins Filtration | FF5643 |
| Mack OE | 25100073 |
| Mack OE (alt.) | 483GB476M |
| Baldwin | BF7773 |
| Donaldson | P554476 |
| WIX | 33644 |
Why Choose IXIN’s FF5643 Fuel Filter
- Purpose-Built for Mack ASET/E-Tech Engines — Engineered specifically for this engine platform’s secondary fuel filtration stage, rather than a generic cross-brand filter.
- Fine Filtration Efficiency — Rated at 7 microns, capturing fine particulate contamination before it reaches the fuel injection system.
- OEM-Equivalent Fit — Manufactured to match the OE M30 x 1.5-6H INT thread specification and dimensions for the FF5643, ensuring drop-in compatibility.
- Factory-Direct Supply — As a manufacturer (not a trading company), IXIN offers stable lead times and customization options for private label, packaging and media specification.
- Bulk & OEM Pricing — Volume discounts available for distributors and fleet operators. For guidance on verifying cross reference numbers and correct engine-platform fitment before a bulk order, see our fuel filter cross reference guide.
Installation & Maintenance Notes
For Mack ASET/E-Tech engines using the FF5643 secondary fuel filter, general service steps include:
- Relieve fuel system pressure before removing the old filter.
- Lightly oil the new gasket with clean diesel fuel before installation to ensure a proper seal.
- Hand-tighten per manufacturer torque specification for the M30 x 1.5-6H INT thread — avoid over-tightening, which can damage the gasket seal.
- Prime the fuel system per OEM procedure before restarting the engine.
- Secondary filters are typically replaced together with the primary filter during scheduled maintenance — always confirm against your Mack maintenance schedule.
FAQ
Q: Does the FF5643 fit Mack MP7 or MP8 engines? A: No. The FF5643 is designed for the Mack ASET/E-Tech engine architecture. MP7 and MP8 engines use a different fuel filter design. Verify your engine’s exact model before ordering.
Q: What’s the difference between IXIN’s FF5643 and the OEM Fleetguard filter? A: IXIN manufactures this filter to match the OE thread specification, dimensions and the 7-micron filtration rating. The main difference is price and lead time — IXIN offers factory-direct pricing for bulk and OEM orders without compromising fit or filtration performance.
Q: Can I order the FF5643 with custom packaging or private label? A: Yes. IXIN supports customized packaging, labeling and media specifications for distributors and private-label buyers. Contact our sales team with your requirements.
Q: What is the minimum order quantity (MOQ)? A: MOQ varies by customization level. Get in touch with us via WhatsApp or email for current MOQ and lead time on the FF5643 fuel filter.
