CarCareTruth Score
Decent.
Priced as of May 28, 2026
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Prices may varyThis product ranks #9 of 14 in Foam Cannon.Three above it ↓
Last reviewed May 28, 2026
TL;DR owners confirm thick, clinging foam on SPX-series washers at 2,000·3,100 PSI; dwell time unconfirmed. Fitting material undisclosed · long-term durability is not yet community-verified.
A 1/4-inch quick-connect pressure-washer foam cannon with a 34 fl oz bottle, top-mounted soap-to-water ratio knob, and a twist nozzle adjusting from pinpoint jet to wide-angle fan. The cannon ships with five quick-connect nozzle tips (0°, 15°, 25°, 40°, soap). Rated to 3,000 PSI. Multiple owners running SPX-series washers at 2,000·3,100 PSI report thick, clinging foam that covers vehicles heavily and clings until heat and gravity pull it down. Body material is plastic (resin code not disclosed); fitting material is not specified in the listing spec table or ShopJoe specs · no brass claim is made by the manufacturer. The listing does not state O-ring material; natural rubber is not confirmed.
Best for SPX-series pressure washer owners running 2,000+ PSI who want a dedicated foam cannon upgrade over the built-in soap dispenser, and who can meet Amazon's Add-On Item cart minimum. Skip if your washer runs below 1,500 PSI or if you need a standalone purchase without a qualifying cart · and check fitting compatibility if you use a non-SPX machine.
The cannon is physical hardware with no chemical exposure in normal use; health score is 9.5 (Minimal Risk). Plastic body with unconfirmed resin code · long-term lifecycle durability and recyclability follow typical commodity-cannon norms (environment score 5).
The cannon uses a 1/4-inch quick-disconnect fitting and is rated to 3,000 PSI. It is designed for the Sun Joe SPX series of electric pressure washers. Non-SPX machines with a 1/4-inch quick-connect gun port should be compatible; M22-threaded lances require a 1/4-inch-to-M22 adapter (not included). The listing title states 'SPX Series' specifically · confirm your machine's gun port type before ordering.
The SPX-FC34-MXT includes five 1/4-inch quick-connect nozzle tips: 0°, 15°, 25°, 40°, and a soap tip. This distinguishes it from earlier SPX-FC34 models that did not ship with nozzle tips.
Yes. The Rainforest API metadata for ASIN B09B48YDGS flags this as an Amazon Add-On Item, which means Amazon requires a qualifying cart total to purchase it on its own. Pair it with a qualifying soap or other purchase to clear the threshold.
Use a car-wash soap formulated for foam cannons · high-foaming, surfactant-rich concentrate. owners have confirmed thick foam with Chemical Brothers soap at a medium dilution. Start with 1·2 oz of concentrate per 34 fl oz fill and tune with the top-mounted ratio knob.
Run plain water through the unit for 30·60 seconds at the end of each session to clear soap residue from the jet orifice before storage. The 34 fl oz bottle unscrews for rinsing. No community reports of clogging under this routine were surfaced.
Marketing copy from Sun Joe, via Amazon. Not editorial.
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