{"product_id":"22929188-diode-unit-genuine-volvo-penta","title":"22929188 Diode Unit | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n Genuine Volvo Penta diode unit from the Alternator, Charging, Electric Motor and Electric Drives group, weighing 0.036 kg and listed for 31 D series applications. It supersedes part number 21216813.\n\u003c\/p\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Engine Family:\n  \u003c\/strong\u003e\n  D\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n Full model list at the end of this description.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Diode unit from the Alternator, Charging, Electric Motor and Electric Drives group\n \u003c\/li\u003e\n \u003cli\u003e\n  0.036 kg\n \u003c\/li\u003e\n \u003cli\u003e\n  Listed for 31 D series applications\n \u003c\/li\u003e\n \u003cli\u003e\n  Supersedes part number 21216813\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n Rectifies the alternator's alternating output into direct current for the batteries and lets current pass in one direction only, so the batteries cannot discharge back through the windings.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Battery flat or undercharged despite the engine running\n \u003c\/li\u003e\n \u003cli\u003e\n  Charge warning light glowing dimly or flickering\n \u003c\/li\u003e\n \u003cli\u003e\n  Charging voltage low, unstable or ripple-heavy on a meter\n \u003c\/li\u003e\n \u003cli\u003e\n  Radio interference or a whine through the electrics\n \u003c\/li\u003e\n \u003cli\u003e\n  Diodes found blackened, cracked or open circuit on test\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🛠️ Service Notes\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Check the battery, main cables and earth straps before condemning the diode unit, as a bad connection gives the same reading\n \u003c\/li\u003e\n \u003cli\u003e\n  Disconnect the batteries before working on the charging circuit, and never break the alternator output while the engine runs\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  22929188 → Supersedes 21216813\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  21216813 earlier number superseded by this part\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Volvo Penta part\n \u003c\/li\u003e\n \u003cli\u003e\n  Brand new\n \u003c\/li\u003e\n \u003cli\u003e\n  Supplied in original or equivalent packaging\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔎 Full Model Compatibility\n\u003c\/h2\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Volvo Penta D13C3-B MH, D13C1-B MH, D13C4-B MH, D13C2-B MP, D13C4-B MP, D13C5-B MP, D13C6-A MP, D13C7-B MP, D13C8-B MP, D13B-N MH, D13C1-A MH\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D16C1-E MG, D16C1-F MG, D16C2-E MG, D16C2-F MG, D16C1-E MH, D16C1-F MH, D16C2-E MH, D16C2-F MH\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D8A5-A MH, D8A6-A MH, D8A5-A MG, D8A6-A MG, D8A1-A MP, D8A2-A MP, D8A3-A MP, D8A4-A MP\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D11C1-A MP, D11C3-A MP, D11C2-A MP, D11C4-A MP\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":53383879950628,"sku":"908881M","price":152.15,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_21b0fb20-e55c-4ffb-9ce9-2e5cd7afd955.png?v=1788064782","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/22929188-diode-unit-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}