Choosing a suitable diesel particulate filter (DPF) requires matching the filter with the exact brand, model, and engine specifications of the vehicle, while considering substrate quality, coating and regulatory compliance (such as CARB). Prioritize OEM or high-quality aftermarket units to ensure proper installation, optimal recycled precious metal loading and durability.
| Performance | Cordierite DPF | Silicon Carbide (SiC) DPF |
|---|---|---|
| Material | Magnesium aluminosilicate ceramic | Silicon carbide ceramic |
| Max Temperature Resistance | ~1400–1460 °C (softening point) | ~2500–2700 °C (melting point) |
| Thermal Conductivity | Low (approx. 10–20 W/m·K) | Very high (approx. 120–200 W/m·K) |
| Thermal Expansion Coefficient | Extremely low (<1.0×10⁻⁶/°C), excellent thermal shock resistance | Relatively high; usually segmented to relieve thermal stress |
| Mechanical Strength | Medium | High (hardness close to diamond) |
| Structure | Monolithic (one-piece ceramic) | Segmented (multi-piece assembly) |
| Backpressure / Weight | Low backpressure, light weight | Slightly higher backpressure, heavier weight |
| Soot Loading Capacity | Medium | High (can hold more soot) |
| Cost | Low (economical) | High (premium / heavy‑duty) |
| Market Share | Approximately 30% | Approximately 63% (mainstream) |
| Outer Diameter (mm) | Length (mm) | Volume (L) | Typical Application |
|---|---|---|---|
| Φ118.4 | 152.4 / 254 | 1.67 / 2.78 | Mini trucks, small pickups, small machinery |
| Φ144 | 152.4 / 203 / 254 / 305 | 2.49 / 3.31 / 4.13 / 4.96 | Light trucks, vans, SUVs |
| Φ190.5 | 152.4 / 203 / 254 / 305 | 4.32 / 5.76 / 7.23 / 8.65 | Medium trucks, heavy pickups |
| Φ228 | 152 / 203 / 305 | 6.20 / 8.30 / 12.47 | Heavy trucks, buses |
| Φ266.7 | 254 / 305 | 14.2 / 17.1 | Heavy trucks, engineering vehicles |
| Φ300–330 | 300–600 | 21–51 | Heavy machinery, generator sets |
Features:
Extremely strong resistance to thermal shock: with an extremely low coefficient of thermal expansion, it can withstand severe temperature changes during regeneration and is not easily cracked.
Low cost and mature technology: 30%~50% cheaper than SiC, it is the mainstream original configuration solution for passenger cars and light trucks.
Integrated structure: seamless, low back pressure, easy installation.
Suitable for :
Household diesel cars SUV
Urban light trucks and buses (frequent start stop, mild operating conditions)
Limited budget, pursuit of cost-effectiveness
Features:
1.Ultra high temperature resistance: up to 2700 ℃, not afraid of burning or melting.
2.Ultra fast thermal conductivity: The regenerated heat is evenly diffused, with high regeneration efficiency and less risk of thermal runaway.
3.High strength, long service life: wear-resistant, corrosion-resistant, can be used for 5-8 years under heavy working conditions.
4.High carbon load: can store more carbon smoke, with a long regeneration interval, suitable for long-term heavy load.
Suitable for:
Heavy trucks, construction machinery, mining vehicles (long-term high load, high temperature).
Non road machinery, generator sets.
Severe working conditions with frequent regeneration and easy ash blockage.
Post time: Apr-17-2026