Category Archives: Filters

Filtration engine

Filtration engine


HU 721/4 x and HU 815/2 x Mounting Instructions

For oil filter housings without bevelled edge centre tubes

Screen Shot 2017-02-22 at 16.18.19

MANN-FILTER oil filter references HU 721/4 x and HU 815/2 x are fitted to a wide range of popular BMW applications.

The internal radial sealing mechanism of the above filter elements and housing centre tubes differ slightly from traditional OE cartridge oil filter designs. These housings feature bevel-less centre tubes that require a simple, angled technique to aid the mounting of the oil filter elements.

In order to ensure the correct sealing of both elements it is important to follow the mounting instructions outlined below. By following these steps the element will be mounted and sealed perfectly.

Screen Shot 2017-02-22 at 16.19.23

PU 9003 z – The Ultra-Clean Fuel Filter

Fitted with a CCM (Component Cleanliness Management) Seal

Fuel efficiency is an important task for modern injection systems. As a result, it is necessary for fuel to be precisely dispensed in minute quantities. The injection nozzle diameter must be extremely small to meet increasingly demanding requirements.

To protect the sensitive components of the fuel-injection system, vehicle manufacturers set strict specifications regarding the cleanliness of all parts within the fuel system. In addition to protecting the fuel-injection equipment against harmful contaminants, the filter itself needs to be very clean.

The production process and the finished filter are required to meet the highest cleanliness standards. At the MANN+HUMMEL manufacturing plant at Marklkofen there is an ultra-modern clean room designed for this purpose. To keep the filters clean in transit, an adhesive seal is affixed to the clean side of MANN_FILTER PU 9003 z. The seal needs to be removed shortly before installation to prevent contamination.

Screen Shot 2017-02-22 at 16.14.39

Screen Shot 2017-02-22 at 16.15.16

MANN-FILTER Fuel Filters: PU 8006, PU 8021 and PU 8014

New Recommendations for Volkswagen Applications

Alternative OE installation

On some Volkswagen 2.0 TDi applications, the original equipment fuel filter housings are sourced from two different suppliers. The OE housing supplied by MANN+HUMMEL is delivered complete with the fuel filter element MANN-FILTER PU 8006, which was also initially available as the MANN-FILTER Aftermarket part.

MANN-FILTER – one for all
In order to deliver a MANN-FILTER product suitable for installation into both of the fuel filter housings sourced by Volkswagen, MANN-FILTER PU 8021 now replaces PU 8006 as the recommended Aftermarket part. Although PU 8021 differs dimensionally from PU 8006 and the alternative supplier’s OE and Aftermarket filter elements, all OE filtration performance requirements are met.

Screen Shot 2017-02-22 at 16.09.14

Water drain option?

A fuel filter housing featuring a water drain device may also be installed on some Volkswagen 2.0 TDi models. This housing type takes a different filter element – MANN-FILTER PU 8014. Therefore it is necessary to differentiate between fuel filter housing types to ensure the correct filter element is supplied and subsequently fitted. The water drain device is clearly visible adjacent to the inlet and outlet pipes at the top of the housing (see image).Screen Shot 2017-02-22 at 16.06.45

Screen Shot 2017-02-22 at 16.09.41


MAN-UP! – To Air Pollution! with FreciousPlus Cabin Air Filters

The recent toxic air alert, issued in January 2017 for eight London boroughs warned of a public health emergency and a seemingly worsening UK air quality scenario.

In view of the latest toxic air quality alert, MANN-FILTER believe the Aftermarket Industry can play an important role by helping to improve the purity of vehicle interior air. The latest ‘red’ air warning was issued as a cloud of pollution contributed towards the breaching of London’s annual legal Nitrogen Dioxide (NO2) air pollution limit just five days into 2017. The recent breaches prompted campaigners to step up calls to ban diesel vehicles from the capital’s streets, as the toxic gas has been linked to thousands of premature deaths and cases of respiratory disease.

On a more positive note however, the levels of contaminant protection offered by cabin air filters has taken another step forward, thanks to the continuous development of highly efficient filter media by global automotive filtration market leader MANN+HUMMEL.. Recently launched MANN-FILTER FreciousPlus cabin air filters, have an additional biofunctional media layer containing natural polyphenol, designed to trap allergens. A further antimicrobial coating starves bacteria and moulds of the nutrition required for their survival.

Aftermarket businesses, garages in particular, have the opportunity to ensure that vehicle drivers and their passengers benefit from this readily available technology by replacing cabin air filters every 12,000 miles or 12 months, whichever comes first.

Screen Shot 2017-02-22 at 15.58.29

Engine Oil Filters… What You Should Know!

Engine Oil Filters… What You Should Know!

What causes black, brittle and broken filter media?

Occasionally an oil filter element, removed from its housing during servicing, may show visible damage to the pleated filter media.

At first glance, the affected filter may be considered to be defective, as often the pleats can be broken (as illustrated below, left), or may be ‘brittle’ and disintegrate as a result of slight finger pressure when attempting to remove the element.

This abnormal condition is known as media embrittlement.

The root cause
Due to severe operating conditions – such as those experienced by short distance or stop/start driving, delivery vehicles, Mom’s taxis and driving schools – the engine lubricant can become extremely acidic and may attack the protective resin impregnation of the filter media, leaving the media strands open to degradation by acids and chemicals in the oil. This turns them black and brittle.

Related causes
Unsuitable, poor quality or aggressive oil – A depleted TBN (Total Base Number) lubricant is unable to neutralise acidity.

Underservicing of oil and filter – This is commensurate with severe operating conditions.

Non-OE or inferior quality filter A sub-standard filter media is unable to cope with OE standard or extended service intervals.

The solution
1. Maintain oil and filter service intervals as per the vehicle’s operating conditions.

2. Install the correct lubricant grade for the vehicle application.

3. Install a Genuine OE quality oil filter from a trusted supplier, such as MANN-FILTER.

Oil filters – Why choose premium quality?
Filter media – Engineered and impregnated with special resins that defend against oil acidity and aggressive conditions.

Efficiency – Meets the OE specification for optimum contaminant retention.

Service life – Efficient protection of engine components during the entire OE recommended service interval.

Seals – Specifically matched to each application and operating conditions and durable for filter service life.

Air filter fitting tips

Air filter element installation on some Ford Focus/C-Max/Kuga, Mazda 3 and Volvo C30, C70, S40 & V50 models is simple, provided certain fitment points are observed.

The MANN-FILTER air filter for this application is the OE design. However, you can ensure optimum sealing and installation by following this fitment guide.

First, lightly lubricate the seal.

1. Before inserting the filter element, lightly lubricate the seal. Then ensure that the alignment post on the filter end cap is correctly located in the ‘notch’ on the filter housing.

2. Ensure that the edge of the filter element end cap completely fits into the groove of the housing.

3. Pull the end of the housing away from the element and, at the same time, push the filter element in the opposite direction.

4. Once located, the filter element end cap has to be positioned behind the filter housing lip.