GUIDE to Water Deflectors Gen4
Which Engine Bay Water Deflector do I need. This is the question I get daily. So here is a guide to the deflectors and Drain Kits I make and which is best for your Generation 4 van. This applies to Fiat, Peugeot and Citroen vans which are all built in the same factory but re badged to the specific manufacturer.
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COLOUR INDEX TO PICTURE No1 BELOW.
YELLOW. Gen3 Scuttle panel drains at the base of the screen are very small and get blocked quickly. This problem is not an issue on the Gen4 vans, as long as the existing drains are secured and sealed properly. Check all connections and joints and seal with silicon. My drains are not required as the existing ones are large and work well.
BLUE. Gen4 Centre water deflectors to deal with the leak at the centre of the scuttle panel visible just above the blue mark. This is an overflow leak during heavy downpours that soak the diesel injectors causing serious expensive damage of the injectors. I make 2 versions for Gen 4 which is EDV2 and 5
GREEN. Gen4 Bonnet Vent Ducting Deflector. This address’s the issue of water seeping through the seal marked in green at the join between the ducting on the body and the bonnet. The water is drained to the back of the engine bay via two pipes which are supplied with the kit. This fits all vans from 2006 to 2022 models. (Gen 3 and 4) LHD and RHD.
RED. Gen3 and Gen4. (these leaks are self help repairable). If you have a water leak across the entire width of the van (Picture1 RED) at the join between the scuttle panel and the windscreen, solving this problem can only be achieved by removing the plastic scuttle panel and thoroughly cleaning it, and the windscreen. Then laying a bead of sealer along the mating faces of the plastic scuttle panel and the windscreen. Once the scuttle panel is pushed firmly back in place, this should give you a good seal once again. Once this has been done, its very important to make sure that your existing drain pipes are connected properly and sealed with silicon. Many times these pipes come adrift and cause the Gen4 leak problems. One of the drains has a connector half way down. Make sure this is also sealed. The last place that can cause issues is around the wiper spindles where they pass through the scuttle panel. When refitting the scuttle panels, make sure that the foam laid over the top of the wiper boxes is in good condition. If not then replace it. As you lay the scuttle panels back in place onto the windscreen, the foam pads on the wiper boxes should be gently squeezed to form a seal.
BLACK CROSS. Windscreen Wiper Spindle Holes. The only thing stopping the water seeping through these holes is some foam wedged under the scuttle panel which works to a certain extent. My design aims to deflect the water around the holes. There are three layers of deflection.
LIGHT BLUE. Working on solution.
Picture No1 Ducato/Boxer/Relay Layout
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Picture No2 Centre Scuttle Deflector EDV2 for Gen4 Ducato. Normally with holes, but can be with slots if your metal plate doesn’t drop down easily due to extra brackets that are sometimes fitted.
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Picture No3 Centre Scuttle Deflector EDV5 for Gen4 Ducato
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Picture No4 Bonnet Vent Deflector for Gen3 and 4 Ducato to 2022
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Wiper Spindle Hole Deflectors suitable for Gen3 and 4 vans.
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WIPER BOX/SPINDLE DEFLECTOR.
This is the current project I am working on for Gen3 & Gen4 Ducato vans. This collects any water getting past the scuttle panels on the drivers side and through the wiper spindle hole above the engine and injectors. Once I’m happy with its effectiveness and heat resistance in hot climates I shall add it to the list of engine bay water deflectors.
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