Johnson Pump Aqua Jet WPS 3.5
#5 in Under 4 GPMFull review
A marine pressure pump with a 3-year warranty, for boats where 41 psi is plenty. RV owners after a firmer shower should look at 55 psi pumps.
Amazon $137.49$137.49
3.5 GPM41 psi
2.7/5
The standard replacement pump for travel trailers and campers, with a 55 psi switch and a bypass for smoother flow. Buy it to replace a worn 4008 like for like.
- 3 GPMFlow
- 55 psiShut-off
- 7.5 AMax draw
- Pressure switchControl
Check price at Amazon$127.05
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 55 psi shut-off gives a strong shower on a standard 3 GPM pump
- Internal bypass cuts the on-off cycling at a slow-running tap
- Drop-in replacement for the pump many RVs ship with
Cons
- Pentair publishes no warranty term for it
- Pays more per GPM than the importer pumps of the same size
The Shurflo Revolution family
Every Shurflo Revolution model we rank, smallest first. Ratings compare each against its own flow.
| Model | Flow | Rating | Price |
|---|---|---|---|
| Shurflo Revolution 4028 2.3 GPM | 2.3 GPM | 2.5/5 | $120.10 |
| Shurflo Revolution 4008 3.0 GPM (this one) | 3 GPM | 2.7/5 | $127.05 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its flow. How we rank explains each one.
Specifications
| Model number | 4008-101-E65 |
|---|---|
| Performance | |
| Rated open flow | 3 GPM |
| Shut-off pressure | 55 psi |
| Max current draw | 7.5 A |
| Price per GPM | $42.35 |
| Features | |
| Control | Pressure switch |
| Internal bypass | Yes |
| Runs dry | Yes |
Alternatives in this flow
Lippert Flow Max 3.0 GPM 12V
#6 in Under 4 GPMFull review
A dealer-friendly 3 GPM replacement from a big RV parts maker. Seaflo’s 42 Series gives the same flow and more pressure for less.
Amazon $105.95$105.95
3 GPM50 psi9.5 A
Jabsco Par-Max 3 25 psi
#8 in Under 4 GPMFull review
A low-pressure pump for boats and gravity-style systems where gentle 25 psi flow is wanted. Most RVs want a 45 to 55 psi pump instead.
Amazon $121.48$121.48
3 GPM25 psi5.2 A
Compare
Compare the Shurflo Revolution 4008 3.0 GPM with any other RV water pump →
More from Shurflo: every Shurflo product ranked.