How to Replace a Bosch Washing Machine OEM Inlet Valve Assembly (BSH 00622058)
When replacing the water inlet valve on a Bosch front-load washer, using the genuine BSH OEM part ensures exact fit, correct solenoid resistance values, and proper AquaStop system compatibility. The BSH 00622058 is the dual-solenoid valve used across many WAT, WAS, and Vision 500 series models. Aftermarket alternatives exist but may have different flow rates or connector orientations.
This guide focuses on identifying the correct OEM part and the specific installation details that differ from generic valve replacement procedures.
Before You Start
- Tools needed: Torx T20 screwdriver, 10mm socket wrench, pliers, multimeter
- Parts needed: BSH 00622058 (verify against your model number — some models use 00609588 or 00617612 instead)
- Time required: 30-40 minutes
- Difficulty: Intermediate
- Safety warning: Disconnect water and power. Depressurize hoses before disconnecting.
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Step-by-Step Instructions
Step 1: Verify the Correct OEM Part Number
The BSH 00622058 fits most standard-width Bosch front-loaders from 2010-2020. To verify: check the sticker on your existing valve (visible after top panel removal) or cross-reference your model number on the BSH parts website.
Key identification: The 00622058 has two solenoid coils (identifiable by two electrical connectors on top), three water outlet ports (hot wash, cold wash, and pre-wash/detergent flush), and the standard mounting tab spacing for Bosch rear-panel mounting.
Step 2: Remove the Top Panel for Access
Two Torx T20 screws at the rear edge. Slide the panel backward approximately 1 inch until the front hooks disengage, then lift off. The valve is immediately visible at the upper-rear-left area of the machine, with hose connections going through the rear panel.
Step 3: Photograph All Connections
Before disconnecting anything, photograph: (A) the electrical connectors and which solenoid each connects to, (B) the internal distribution hoses and which valve outlet port each connects to, (C) the external hose positions (which port is hot, which is cold).
On the BSH 00622058, the ports are typically: left = cold/main wash, right = hot/pre-wash. Internal distribution: center port goes to detergent drawer main compartment, side port goes to pre-wash compartment.
Step 4: Disconnect and Remove
Turn off water, disconnect external hoses (10mm socket on coupling nuts), disconnect internal hoses (squeeze spring clamps with pliers, slide back, pull off), disconnect electrical connectors (2 connectors, each with a locking tab). Remove 2 mounting screws (Torx T20). Lift valve out.
Step 5: Install the OEM Valve
The BSH 00622058 drops directly into the same mounting position. Secure with the 2 Torx T20 screws. Reconnect internal hoses to the matching ports (use your photograph). Reconnect electrical connectors — they are keyed and only fit one way. Reconnect external hoses from the rear.
Step 6: Test with AquaStop Verification
Turn on water gradually. With AquaStop models, the AquaStop module on the inlet hose should show green indicator. Start a wash cycle and verify: correct water temperature reaches the drum (cold cycle = cold water, hot cycle = warm water), water routes through the detergent drawer (not directly into drum), and no leaks at any connection.
OEM vs Aftermarket Considerations
| Factor | OEM BSH 00622058 | Aftermarket |
|---|---|---|
| Flow rate | Factory-spec for Bosch fill times | May vary (over/under fill) |
| Connector orientation | Exact match | May require adapter or rotation |
| Solenoid resistance | 3000-4500 ohms (matches board) | May differ (E17 possible) |
| AquaStop compatibility | Guaranteed | Usually compatible |
| Price | $50-$75 | $25-$45 |
| Warranty on machine | Maintained | May void Bosch warranty |
Safety First — Know the Risks
Appliances involve high voltage (120-240V), pressurized water, gas lines, and chemical refrigerants. Over 400 DIY repair injuries are reported yearly. Our techs are licensed and insured — let them handle the risk.
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Troubleshooting
- Aftermarket valve triggers E17 despite working: Solenoid resistance may be outside Bosch board's expected range. The control board checks for expected current draw and flags if off-spec. Use OEM part.
- Water routes to wrong compartment: Distribution hoses are on wrong outlet ports. Re-photograph original routing and swap.
- Valve buzzes loudly: Normal for first 2-3 fills as the new diaphragm seats. If buzzing persists beyond initial use, the valve may be defective.
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Cost Comparison: DIY vs Professional
| DIY | Professional | |
|---|---|---|
| Parts (OEM) | $50-$75 | $50-$75 |
| Labor | $0 | $150-$250 |
| Time | 30-40 min | 20-30 min |
| Risk | Low | Warranty on labor |
The Real Cost of DIY
Average DIY attempt: $150-400 in tools you may use once, plus the risk of further damage. Our diagnostic visit costs $0 — we find the problem and give you an honest quote.
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FAQ
Q: How do I find the correct OEM part number for my model? A: Check the label inside the door frame for your full model number (e.g., WAT28400UC/01). Enter this on the BSH spare parts website or call BSH directly. The valve part number is also often printed on a sticker on the valve itself.
Q: Is the BSH 00622058 compatible with all Bosch washers? A: No — it covers many WAT, WAS, and Vision 500 series models from approximately 2010-2020. Compact models, newer WGA series, and some specialty models use different valves. Always verify by model number.
Q: Can I use a triple-solenoid valve to replace a dual-solenoid? A: No — the mounting holes, ports, and control board wiring are specific to the valve type your model uses. Using the wrong valve type will result in mis-routed water and error codes.
Q: My valve part number starts with 006 but a different suffix — is it compatible? A: BSH part numbers with different suffixes are different parts. Even close numbers (00622058 vs 00622059) may have different port configurations. Use the exact number for your model.
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