Company info

 4x4Airseals - Uk supplier, manufacturer and innovating company of Air suspension compressor related products serving customers in the Uk and worldwide longer than any other supplier! designing and providing quality products consistently with the kind of technical support that is in short supply with other sellers vital to get your do-it-yourself repair to satisfactory level and with a end result hopefully with your vehicle back on the road.     !  Please save us as a your prefered seller for these products before leaving the listing you are viewing ! navigating back to us on the ebay system in the future can sometimes be a hit or miss experience as the ebay searching system can change on a hourly/daily basis. 

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 Compressor Fault / Kit Diagnosis

 When your garage informs you need a new compressor in our experience you generally do not ! first thing you ideally need to do is have your vehicles diagnostic codes read and write them down (very important insist on it at your garage) and then physically check which type of compressor you have fitted on your vehicle ( Compare Pictures in any of our related listings together with diagnostic code description )

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 Compressors Type

 !  Oem Land Rover Discovery /RR Sport Hitachi unit, ( Picture 2 )    Land Rover Discovery 3 4 & RR Sport replacement AMK Supplied unit ( picture 3) or  Land Rover Discovery 3 4 & RR Sport Aftermarket Dunlop Hitachi Copy unit ( picture 4 ) Hitachi or Dunlop - Range Rover L322 2005-20011 ( picture 5 look carefully at picture

   ! We now illustrate at the beginning of our product descriptions for Hitachi and Dunlop/Amk compressors ! the fault code the particular kit you are viewing will help to resolve ! either a C1A20 or C1A13. These 2 codes are the bench mark codes that cause garages/customers to replace or repair their units.

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Diagnostic code Description

C1A2064 ( C1A20 )

Pressure increase to slow when filling gallery  =  Compressor fault  92% of cases  ! Our master repair kit together with fitting instructions recommended.

Other code diagnosis   =   Resorvoir pipe air leak /Gallery Pipe air leak/Intake filter blocked or restricted/Intake pipe blocked or restricted / Air suspension intake silencer blocked or restricted /Air suspension intake silencer blocked or restricted / corner valve stuck open /pressure sensor fault/ Electric motor burnt out / Piston connecting rod broken or jammed.

C1A1364 ( C1A13 )

Pressure does not decrease when venting gallery = Compressor fault 95% of cases ,! Our Exhaust valve seal & dryer filtration repair kit together with fitting instructions recommended.

Other code Diagnosis =  Exhaust valve stuck closed/Exhaust valve does not hold minimum retention pressure/ Gallery pipe blocked or damaged / Pressure sensor fault / Air suspension exhaust silencer blocked or restricted / Air suspension exhaust pipe blocked or restricted / Reservoir valve block pipes incorrectly fitted (unions reversed)

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Vehicle Models affected

   Land Rover Discovery 3 4 & Range Rover Sport 2004-2012 and Range Rover L322 late 2005-2012 are the vehicles fitted with the above units and related products.

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 Vehicle Compatibility Chart  ! note

     The vehicle compatibility chart at the beginning of most ebay listings is reasonably accurate but can sometimes illustrate your vehicle as not compatible ! Please use our listings info/pictures as the definitive vehicle compressor compatibility information

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Listing Kit / Part ( Picture 1)

C1A20 product 

This listing will supply you our Main C1A20 Compressor repair kit with fitting instructions suitable for Aftermarket Dunlop Air compressors,all parts included related to a c1a20 diagnostic code incl fitting instructions,we are the original designers of this product and is a proven product over many years ! 

 If you also have a C1A13 code diagnostic code 'not venting the gallery ' please purchase our Dunlop Master repair kit which includes the exhaust valve seals available in our other listings.!!!!!! Please Message us if you can not find a product or just need advice.

 If you only require a kit to solve a C1A13 diagnostic code problem then purchase our Dunlop complete Exhaust Valve repair kit also available in our other listings which includes dryer filtration ! please message us for further information.

 We understand their can be cheaper products elsewhere ! but please bare in mind that you only want to hopefully carryout your vehicles repair one time and want you to know we designed  these products many years ago and can vouch for their quality and fitment as a uk manufacturer and more importantly offer experience & support with these units like no other supplier ! knowing the issues back to front inside & out ! Please don't hesitate to contact us ! Trust us you have come to the right place.

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Vehicles affected

Discovery 3/4 2004-2010 --- Range Rover Sport 2004-2010 --- Range Rover L322 2006-2009

Support Uk Manufacturing ,

 Hitachi Air Compressor Serial Numbers

RQG500071 RQG500072 RQG500080 RQG500090 RQG500060 RQG500061 RQG500062 RQG500070  LR044360 LR01530 LR015303 LR023964 LR010376 LR045251 UUB504700 VUB504700RQG000017 RQG000018 RQG000019