HYDRAULIC - FUEL - OIL - AIR
All Replacement Filters – One Partner for Every System
Reduce sourcing complexity and procurement costs with Longday’s complete range of replacement filter elements for hydraulic, oil, fuel, AdBlue, and air systems. Manufactured in OEM quality at our dedicated production facilities across Europe and Asia, each filter is precisely adapted to your technical and logistical requirements.Smarter sourcing for professionals. You specify – we supply! One Partner – All Filters.




























Longday supports strategic purchasers, designers, and production managers with:
- Customized packaging and branding
- Performance-validated solutions
- Reliable and consistent supply
- Replacements for discontinued items
- Second-source alternatives
- Supplier base consolidation
- Competitive pricing
We don’t just copy existing filters — we improve them.
Upgraded Performance Options
On request, Longday can upgrade your current design to enhance efficiency, safety, and reliability:
- Higher filter class or filtration efficiency
- Flame-retardant, hydrophobic, or high-temperature versions
- Activated carbon or molecular sieve fillings
- Stainless steel (Inox) or eco-friendly designs
Your filters – reimagined for performance and safety.
Scope of Filters
- Hydraulic and lubrication systems
- Oil, fuel, and AdBlue filtration
- Engine air intake filters (pleated or honeycomb designs)
- Cabin filters for on-road, off-road, railway, industrial cleaning, and aviation applications
- Filters for plastics processing, cleaning, and industrial machinery
Customized Packaging & Labelling
Replacements for other brands




























Easily find, compare, and replace existing filters across all types — hydraulic, oil, fuel, AdBlue, and air.
Provide us with:
- A part number
- A sample for validation, or
- A technical drawing —
and we’ll deliver an equivalent or technically improved solution with OEM quality, competitive pricing, and global logistics support.
Why Longday
- OEM-grade production in Europe & Asia
- Consistent quality and supply reliability
- Technical flexibility for upgrades and customization
- Independent advice and fast response times
Ask us – we deliver what fits your system, your standard, and your strategy.
