991657 Hexagon Nut | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta hexagon nut weighing 0.005 kg and listed for 111 applications across the IPS, D, V, DPH, DPI and DPR series. It supersedes part number 940183. It heads a group of four fasteners here that share the same six series and near-identical fitment counts — washer 991658, washer 991659 and toothed washer 991660 — and they are commonly wanted together.

🚤 Compatibility

• Engine Family: IPS, D, V, DPH, DPI, DPR
• HP Range: 140-480 HP

Full model list at the end of this description.

⚙️ Key Features

• 0.005 kg
• 111 applications across the IPS, D, V, DPH, DPI and DPR series
• Supersedes 940183
• Part of a fastener group with washers 991658, 991659 and toothed washer 991660

🔌 Function

Locks onto a stud or screw thread to hold the clamped joint together.

⚠️ Common Signs of Failure

• Nut backing off or the joint rattling loose
• Thread stripped, stretched or picked up
• Hexagon flats rounded off
• Corrosion or seizure between nut and thread

🛠️ Service Notes

• Order the matching washers at the same time — 991658, 991659 and the toothed washer 991660 carry the same six-series fitment and a nut on its own often leaves the job short

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 991657 → Supersedes 940183 → Supersedes 824128

OEM / Related Numbers

• 940183 earlier number superseded by this part

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta V6-200-CE-N, V6-240-M, V6-240-C-M, V6-240-CE-M, V6-280-M, V6-280-C-M, V6-280-CE-M, V6-280-J, V6-280-C-J, V6-240-CE-N, V6-240-CE-K, V6-280-CE-K, V6-200-J, V6-200-C-J, V6-280-CE-N, V6-200-M, V6-200-C-M, V6-250-CE-O, V6-240-J, V6-240-C-J
• Volvo Penta V8-300-C-M, V8-300-CE-M, V8-350-C-M, V8-350-CE-M, V8-300-CE-N, V8-350-CE-N, V8-380-C-M, V8-380-CE-M, V8-430-C-M, V8-430-CE-M, V8-300-C-K, V8-300-CE-K, V8-350-C-K, V8-350-CE-K, V8-380-C-K, V8-380-CE-K, V8-430-C-K, V8-430-CE-K, V8-380-CE-N, V8-430-CE-N
• Volvo Penta D6-330A-F, D6-370A-F, D6-300A-F, D6-440I-G, D6-480I-G, D6-300A-G, D6-340A-G, D6-380A-G, D6-440I-WJ-G, D6-480I-WJ-G, D6-300D-G, D6-340D-G, D6-380D-G, D6-440D-G, D6-480D-G, D6-400A-G, D6-440A-G, D6-400A-F, D6-480A-G
• Volvo Penta D13C2-B MP, D13C2-A MP, D13C4-A MP, D13B-L MP, D13B-G MP, D13B-K MP, D13B-C MP, D13C5-B MP, D13C6-A MP, D13C4-B MP, D13C5-A MP, D13C7-B MP, D13C8-B MP
• Volvo Penta D4-260A-F, D4-300A-F, D4-225A-F, D4-150A-G, D4-230A-G, D4-270A-G, D4-320A-G, D4-300A-G
• Volvo Penta D11C2-A MP, D11C4-A MP, D11B4-A MP, D11B2-A MP, D11A-C MP, D11A-D MP, D11A-E MP
• Volvo Penta D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H
• Volvo Penta D8A2-A MP, D8A4-A MP, D8A8-A MP
• Volvo Penta IPS15-C, IPS15-B, IPS15-A
• Volvo Penta IPS2-C, IPS2-A, IPS2-B
• Volvo Penta DPH-D1, DPH-E
• Volvo Penta IPS20-D, IPS20-E
• Volvo Penta IPS3-C, IPS3-A
• Volvo Penta IPS30-E, IPS30-D
• Volvo Penta DPI-A
• Volvo Penta DPR-D
• Volvo Penta IPS40-A