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Shurflo 4008-101-A65 / 94-800-01 Revolution 12V RV Water Pump Upper Housing, Check Valve & Bypass Switch Kit Engineering Diagram
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SPECFOUNDRY SKU: SF-RV-109 · BRAND REF: Shurflo / Pentair

Shurflo 4008-101-A65 / 94-800-01 Revolution 12V RV Water Pump Upper Housing, Check Valve & Bypass Switch Kit

Stamped Casting / OEM Numbers: 4008-101-A65 4008-101-E65 2088-422-144 94-800-01 94-231-20 PARMAX-PS

Compatible Units: Shurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm Pumps

Critical Dimensions & Spec: 55 PSI factory cut-out pressure switch; 1/2" NPSM male threaded ports; integrated EPDM check valve & bypass diaphragm

$56.99
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Pre-Order Dimensional Verification Checklist

OEM Cross-Reference & Stamped Casting Number Table

Use this cross-reference table to confirm that the number stamped or printed on your original hardware or circuit board corresponds to SpecFoundry SKU SF-RV-109:

Stamped / OEM Part Number Manufacturer / System Brand Compatible Models & Years SpecFoundry Replacement SKU
4008-101-A65Shurflo / PentairShurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm PumpsDirect Match (SF-RV-109)
4008-101-E65Shurflo / PentairShurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm PumpsDirect Match (SF-RV-109)
2088-422-144Shurflo / PentairShurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm PumpsDirect Match (SF-RV-109)
94-800-01Shurflo / PentairShurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm PumpsDirect Match (SF-RV-109)
94-231-20Shurflo / PentairShurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm PumpsDirect Match (SF-RV-109)
PARMAX-PSShurflo / PentairShurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm PumpsDirect Match (SF-RV-109)

Common Failure Symptoms Solved by SF-RV-109

Technicians and property owners typically replace 94-800-01 when experiencing one or more of the following failure modes:

  • Shurflo 4008 RV water pump burps or cycles for 1 second every few minutes with all faucets closed
  • Pump motor runs continuously without shutting off at 55 PSI
  • City water backflows into fresh water holding tank through stuck check valve

Step-by-Step Dimensional Verification & Installation Notes

Turn off 12V pump switch and open a faucet to relieve pressure. Remove the 6 Phillips head screws on the Shurflo 4008 pump head, swap the upper valve/switch assembly, and reconnect the two spade wires.

Related Technical Guide: Dometic, Norcold, Atwood & Suburban RV Circuit Board & Alde 3010/3020 Cross-Reference Guide →

Frequently Asked Technical Questions (94-800-01)

Where is the casting or OEM part number (4008-101-A65 / 4008-101-E65 / 2088-422-144) stamped on this part?

On Shurflo / Pentair assemblies, look for the stamped or die-cast numbers (4008-101-A65, 4008-101-E65, 2088-422-144, 94-800-01, 94-231-20, PARMAX-PS) on the underside of the metal housing, along the link arm, on the stainless hinge track, or printed on the circuit board/valve label. Note that casting numbers identify the housing casting, so always confirm critical dimensions (55 PSI factory cut-out pressure switch; 1/2" NPSM male threaded ports; integrated EPDM check valve & bypass diaphragm) as well.

Does SpecFoundry SKU SF-RV-109 directly replace OEM part 94-800-01 (4008-101-A65, 4008-101-E65, 2088-422-144, 94-800-01, 94-231-20, PARMAX-PS)?

Yes. SF-RV-109 is verified to match the mounting footprint, electrical/mechanical ratings, and dimensional envelope of Shurflo / Pentair 4008-101-A65, 4008-101-E65, 2088-422-144, 94-800-01, 94-231-20, PARMAX-PS used on Shurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm Pumps.

What measurements should I verify before ordering SF-RV-109?

Before ordering, verify: (1) Stamped or OEM code matches one of 4008-101-A65, 4008-101-E65, 2088-422-144, 94-800-01, 94-231-20, PARMAX-PS; (2) Dimensional spec matches: 55 PSI factory cut-out pressure switch; 1/2" NPSM male threaded ports; integrated EPDM check valve & bypass diaphragm; and (3) Application matches: Shurflo 4008 Revolution (4008-101-A65 / E65) & 2088 Series 12V DC RV/Marine Fresh Water Diaphragm Pumps.

How fast does SF-RV-109 ship and what payment methods are accepted?

SF-RV-109 ships within 1–2 business days from our US warehouse network. Flat-rate US Ground shipping is $8.95, or FREE on orders of $150+. You can check out online immediately via PayPal, Venmo, Credit/Debit Card, or request an Instant Card Payment Link / Net-30 Commercial PO Invoice.

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