DPF Buyer’s Guide & Knowledge Base

Welcome to the Tianjin Yongyong DPF Knowledge Base. Whether you are a fleet manager, a heavy-duty truck mechanic, or a regional auto-parts distributor, selecting the right Diesel Particulate Filter (DPF) is critical for minimizing downtime and maintaining emission compliance. Below is our comprehensive guide to DPF procurement, maintenance, and technical specifications.

1. Technical Specifications & Fitment

Are these genuine OEM parts or aftermarket replacements?

We manufacture premium aftermarket DPFs. Our products are engineered to meet or exceed original equipment manufacturer (OEM) standards, providing a cost-effective alternative without compromising on quality or performance.

Are they direct-fit replacements? Do sensor ports align?

Yes. Every DPF we produce is designed as an exact direct-fit replacement for specific OE numbers. The bung threads and locations for temperature and NOx sensors are precisely machined to match the original factory exhaust layout (e.g., for MAN, DAF, Scania, Volvo, etc.).

What material is the substrate: Silicon Carbide (SiC) or Cordierite?

We primarily utilize high-efficiency Cordierite ceramic substrates, which offer an excellent balance of thermal shock resistance, durability, and cost-effectiveness for heavy-duty commercial applications.

2. Regeneration & Durability

Does the DPF support passive regeneration?

Yes, our DPFs are coated with premium precious metal washcoats (Platinum/Palladium) engineered to catalyze passive regeneration effectively during normal highway driving cycles, reducing the need for forced active regenerations.

Are the DPFs flow and backpressure tested before shipping?

Absolutely. Operating under strict ISO 9001 and IATF 16949 quality control protocols, 100% of our DPF units undergo automated air-flow and backpressure testing before they leave our facility to ensure zero defects.

3. Pricing, OEM Services & Bulk Orders

Are you a direct manufacturer or a trading company?

Tianjin Yongyong is a direct source manufacturer based in China. By eliminating middlemen, we provide competitive factory-direct pricing for our global B2B partners.

Do you offer OEM/ODM services and white-label packaging?

Yes. We offer comprehensive OEM and ODM services. For distributors and large fleets, we provide unbranded (white-label) packaging, custom laser engraving of your company logo or part numbers, and bespoke box designs.

What is your Minimum Order Quantity (MOQ) and bulk pricing?

We support flexible MOQs to help new distributors test our quality. For fleet operators and regional wholesalers, we offer tiered bulk pricing. Please contact our sales team for a customized wholesale quote.

4. Warranty & Logistics

What is your warranty policy?

We stand behind our manufacturing quality. Our standard warranty covers defects in materials and workmanship. (Please consult your sales representative for exact mileage/time terms applicable to your region). Claims for substrates melted due to upstream engine failures (e.g., injector leaks) are subject to technical review.

What is the standard lead time for shipping?

Lead times vary based on order volume. Standard in-stock items can be dispatched rapidly, while full container loads (FCL) for customized OEM orders typically have a structured production lead time. We partner with reliable freight forwarders to ensure global delivery.

Need more specific technical data for a particular truck model? Browse our DPF catalog or reach out to our engineering team directly.