In short: the BMC 892/20 is a washable and reusable oiled cotton sport air filter, designed to directly replace the original filter of the Citroën C4 Spacetourer 1.6 BlueHDI 100 and 120 hp.
A discreet diesel engine that deserves to breathe better
The 1.6 BlueHDI engine in the C4 Spacetourer was never designed to be noisy. It's an engine conceived for efficiency and comfort, built to effortlessly cover long family or highway journeys. But even a quiet and refined diesel engine retains its own character, a way of revving and responding to the accelerator pedal, which largely depends on the quality of the air it receives. A clogged or simply standardized filter tends to stifle this character, making acceleration a little sluggish and the driving experience feel less engaging.
The BMC 892/20 filter is specifically designed to preserve that feeling of a responsive engine. Its multi-layered cotton gauze, impregnated with a low-viscosity oil, is held between two epoxy-coated aluminum grids to prevent oxidation. The assembly replicates a design similar to that found on racing filters, with a one-piece molded flexible rubber monocoque, free of fragile welded joints at the corners.
However, let's be honest: BMC doesn't provide any power or torque figures for this filter, and we won't venture to suggest any. What this product offers is a different filter medium, designed to limit pressure losses at the intake, and more environmentally friendly maintenance since it can be washed and reused instead of being thrown away at each service.
Technical specifications
- BMC manufacturer reference: 892/20
- Type: Replacement sport air filter, same size as the original filter
- Filter media: multi-layered cotton gauze impregnated with low-viscosity oil
- Structure: aluminum grids treated with anti-oxidation epoxy
- Carcass: one-piece molding in soft rubber (Full Moulding technology)
- Maintenance: Washable and reusable filter with the dedicated BMC cleaning kit
- Installation: direct replacement in the original airbox, no modifications required
Compatibility
This BMC 892/20 filter is referenced for the following vehicle:
| Brand | Model | Years | Engine |
| Citroën | C4 Spacetourer | - | 1.6 BlueHDI 100 hp |
| Citroën | C4 Spacetourer | - | 1.6 BlueHDI 120 hp |
Assembly and precautions
- Always compare the BMC 892/20 with the original filter before installing it, to check that the dimensions and mounting direction match correctly.
- The filter is delivered pre-oiled by BMC : it is ready to be fitted directly, without adding any extra oil.
- Ensure that the perimeter seal fits snugly around the entire perimeter of the case, without any creases or areas where unwanted air could pass through.
- For cleaning, use only the products from the dedicated BMC maintenance kit, never use solvents or detergents not intended for this purpose.
- Never use a compressed air blow gun or heat source to dry the filter, as this may damage the cotton gauze.
- If you have any doubts about the assembly or condition of the intake manifold, consult a professional for installation.
Frequently Asked Questions
1. Will this filter change the engine noise when accelerating?
The 1.6 BlueHDI remains a naturally discreet diesel engine, and this filter doesn't alter its fundamental sound. Some drivers perceive a slightly more pronounced air intake during acceleration, but this is subtle and subjective.
1. Will this filter change the engine noise when accelerating?
The 1.6 BlueHDI remains a naturally discreet diesel engine, and this filter doesn't alter its fundamental sound. Some drivers perceive a slightly more pronounced air intake during acceleration, but this is subtle and subjective.
2. Does the pedal feel really change with a cotton filter?
The feeling depends on many factors, but a less clogged filter can contribute to a more direct engine response, especially during acceleration. It's a driving pleasure built on subtle details, not a dramatic overhaul.
3. Is the BMC filter suitable for both the 100 hp and 120 hp versions?
Yes, the reference 892/20 is common to both versions of the 1.6 BlueHDI equipping the C4 Spacetourer, the intake housing being identical on these engines.
4. Does the engine need to be reprogrammed to take advantage of this filter?
No, no reprogramming is necessary. The filter is installed in place of the original part, in the existing housing, without any electronic intervention.
5. How often should this filter be cleaned under normal road use?
This depends on the conditions of use and the driving environment, but regular visual inspection allows you to judge the level of soiling and decide when it is appropriate to clean with the BMC kit.
6. Does this filter have an impact on the engine's character in urban use?
In town, the 1.6 BlueHDI does not require much of its intake at high revs, so the effect on the character of the engine is less noticeable than on roads or highways, where revs increase more frequently.
The workshop foreman's tip: before installing this filter, carefully inspect the intake housing and the duct leading to it. A dirty or cracked housing, or a poorly clipped duct, can allow unfiltered air to enter and negate all the care taken in choosing the filter itself.
If you have any doubt about the compatibility or fitting of this filter on your C4 Spacetourer, do not hesitate to ask your question before ordering: the STR Performance team is at your disposal to advise you.
