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Shurflo by Pentair BLASTER™ II Washdown Pump - 12 VDC, 3.5 GPM

TLDR Review: Shurflo BLASTER II Washdown Pump

By ShopSavvy Team

Published: March 3rd, 2026

Pros

•Effectively performs the intended washdown function at the rated 3.5 GPM flow rate.
•Serves as an exact OEM replacement, matching original equipment specifications perfectly.
•Easy to install and hook up, with all necessary components included in the package.
•Features a PSI switch that automatically shuts off the pump at pressure and restarts when opened, adding convenience.
•Higuality build and durable construction noted by many users.
•Recommended specifically for marine use due to its reliability and design.
•With proper maintenance like regular cleaning and keeping the surrounding area dry, the pump’s lifespan can be significantly extended.
•Some users report exceptional longevity, with units lasting up to 19 years.
•Compact size and lightweight design make it suitable for boat applications.

Cons

•Saltwater exposure significantly limits lifespan, often requiring replacement every 2 to 3 years; some report even shorter durability due to corrosion.
•Durability and performance consistency can vary, possibly depending on individual unit quality or manufacturing variance.
•A few users experienced defective pumps that failed to work immediately after installation.
•The pump delivers 3.5 GPM, not the 5.0 GPM suggested by some images, which might cause confusion.
•Concern about corrosion resistance in harsh marine environments is common, with some expecting the pump to last about a year under heavy saltwater use.

Bottom Line

The Shurflo BLASTER™ II Washdown Pump is a solid, reliable choice for marine washdown systems, especially if you value ease of installation and OEM compatibility. While its 3.5 GPM flow rate and automatic PSI switch enhance functionality, be prepared for maintenance and replacement every few years if used heavily in saltwater due to corrosion risks. If you want a dependable replacement pump that balances quality with affordability and don’t mind periodic upkeep, this fits the bill perfectly. For those seeking longer-lasting options in extremely harsh marine settings, considering advanced corrosion-resistant models might be worth exploring.

Lowest at any Popular Retailer

$177.79 at Walmart

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 39 retailers to give you the short version.