I have an older model Karcher pressure washer B403 i wanted to use it on the decking for my caravan,half way through the cleaning it started to spit out high pressure water. I have a good selection of O rings in my garage put the one on the inlet connection still the same. On to Ebay saw thease Karcher genuine O rings problem sorted Well don Karcher Five star
Verified purchase: Yes | Condition: New
I'd fitted new pump seals and they restored the performance of the pressure washer but it still pulsated when the lance trigger was released. As water was coming out of the casing I thought the head was cracked but fitting a new o-ring to the lance connector solved the problem. Bargain!
Verified purchase: Yes | Condition: New
Really easy to install fits really well nice tight seal now with no leaks great product recommend, good seller too.
Verified purchase: Yes | Condition: New
Appears to fit the unit requiring replacement rings
Verified purchase: Yes | Condition: New
What a simple fix, you've got to love these o-rings that stopped the lance from coming of the pressure washer.
Verified purchase: Yes | Condition: New
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