# 983944 O-Ring | Genuine Volvo Penta Part ## 🔧 Product Description Thermostat O-ring weighing 0.002 kg and listed for 251 applications across the V-series engines. In the maintenance parts schedule it is the raw water side O-ring on the 4.3GL-J, GXi-J and OSi-J, the 4.3GXi-G and OSi-G, the 5.0GL-J, GXi-J and OSi-J, and the 5.7Gi-F, GXi-G and OSi-E, while the freshwater side takes O-ring 416033. That split explains the note carried against it that it is included in the kit but not used on these engines, since a freshwater installation has no use for the raw water ring. It supersedes 3863086. ## 🚤 Compatibility - **Engine Family:** V - **HP Range:** 200-320 HP Full model list at the end of this description. ## ⚙️ Key Features - Raw water thermostat O-ring on the J and G generation 4.3, 5.0 and 5.7 engines - 416033 is the O-ring for the freshwater side - 0.002 kg - Supersedes 3863086 - 251 applications across V-series engines - Genuine Volvo Penta Part, designed and manufactured to ensure original fit, safety and performance - Role: Thermostat o-ring - Fits: 4.3GL-J/JF, GXi-J/JF, OSi-J/JF (raw); 4.3GXi-G/GF, OSi-G/GF (G); 5.0GL-J/JF, GXi-J/JF, OSi-J/JF (raw); 5.7Gi-F/FF, GXi-G/GF, OSi-E/EF (raw) - Also supersedes Volvo part numbers 3861676 and 3862834 ## 📋 Kit Contents - Included in kit, but not used on these engines. ## 🔌 Function Seals the thermostat joint on the raw water side by being squeezed into its groove, keeping water in and contamination out. ## ⚠️ Common Signs of Failure - Weeping or seepage at the joint - Ring gone hard, flat-spotted or squared off in section - Nicks, splits or a twist in the ring from a previous fit - Pressure or fluid level dropping with no obvious external leak ## 🛠️ Service Notes - Check whether your installation is fresh or raw water cooled, since the ring is supplied in kits for both and is only fitted on one of them - An older list quoting 3863086 should be read as this ring - Always refer to the operator's manual for the recommended maintenance and service intervals for your engine and drive - Listed against more than one engine or drive family - check the qualifier that applies to your own engine or drive ## 🔄 Supersession & Cross Reference ### OEM Supersession Chain - 983944 → Supersedes 3863086 ## 📦 Condition - Genuine Volvo Penta part - Brand new - Supplied in original or equivalent packaging ## 🔎 Full Model Compatibility Typically suits: - Volvo Penta 5.7GSiI-A, 5.7GXi-320-R, 5.7GXiE-320-R, 5.7GXi-A, 5.7GXi-B, 5.7GXiC-320-R, 5.7GXiCE-320-R, 5.7GXiC-J, 5.7GXiC-JF, 5.7GXiCE-JF, 5.7GXiCE-J, 5.7GXiCE-M, 5.7GXiC-P, 5.7GXiCE-P, 5.7GXi-D, 5.7GXi-DF, 5.7GXi-E, 5.7GXi-EF, 5.7GXi-J, 5.7GXi-JF, 5.7GXiE-JF, 5.7GXiE-J, 5.7GXiE-KF, 5.7GXiE-K, 5.7GXiE-M, 5.7GXiE-MF, 5.7GXiE-P, 5.7GXi-P, 5.7GXi-F, 5.7GXi-FF, 5.7OSXi-D, 5.7OSXi-DF, 5.7GXi-G, 5.7GXi-GF, 5.7GXi-H, 5.7GXi-HF, 5.7GXiI-A, 5.7GXiI-B, 5.7GXiI-D, 5.7GXiI-E, 5.7GXiI-F, 5.7GXiI-G, 5.7GXiI-H, 5.7OSi-300-J, 5.7OSi-300-JF, 5.7OSiE-300-JF, 5.7OSiE-300-J, 5.7OSi-B, 5.7OSi-BF, 5.7OSi-C, 5.7OSi-CF, 5.7OSi-E, 5.7OSi-EF, 5.7OSi-G, 5.7OSi-GF, 5.7OSXi-B, 5.7OSXi-BF, 5.7OSXi-C, 5.7OSXi-CF, 5.7OSXi-E, 5.7OSXi-EF, 5.7OSXi-J, 5.7OSXi-JF, 5.7OSXiE-JF, 5.7OSXiE-J, 5.7OSXi-G, 5.7OSXi-GF, 5.0OSi-DF, 5.0OSi-E, 5.0OSi-EF, 5.0OSi-J, 5.0OSi-JF, 5.0OSiE-J, 5.0OSiE-JF, 5.0OSi-F, 5.0OSi-FF, 5.0OSi-G, 5.0OSi-GF, 5.7Gi-300-J, 5.7Gi-300-JF, 5.7GiE-300-JF, 5.7GiE-300-J, 5.7GiCE-300-M, 5.7GiE-300-N, 5.7Gi-300-N, 5.7GiCE-300-MF, 5.7GiE-300-P, 5.7Gi-300-P, 5.7Gi-300-R, 5.7GiE-300-R, 5.7Gi-A, 5.7Gi-C, 5.7Gi-CF, 5.7GiC-300-J, 5.7GiCE-300-J, 5.7GiCE-300-JF, 5.7GiC-300-JF, 5.7GiC-300-P, 5.7Gi-D, 5.7Gi-DF, 5.7Gi-E, 5.7Gi-EF, 5.7GXiE-N, 5.7GXi-N, 5.7GiE-300-K, 5.7GiE-300-KF, 5.7GiE-300-M, 5.7OSi-D, 5.7OSi-DF, 5.7Gi-F, 5.7Gi-FF, 5.7Gi-G, 5.7Gi-GF, 5.7GiI-A, 5.7GiI-C, 5.7GiI-D, 5.7GiI-E, 5.7GiI-F, 5.7GiI-G, 5.7GL-A, 5.7GL-B, 5.7GL-C, 5.7GL-D, 5.7GL-E, 5.7GiCE-300-P, 5.7GiC-300-R, 5.7GiCE-300-R, 4.3OSi-GF, 4.3OSi-J, 4.3OSi-JF, 5.0GiC-225-S, 5.0GiCE-225-S, 5.0GiC-J, 5.0GL-A, 5.0GL-B, 5.0GL-C, 5.0GXiCE-JF, 5.0GXiCE-J, 5.0GXiC-JF, 5.0GXiCE-M, 5.0GXiCE-MF, 5.0GXiC-P, 5.0GXiCE-P, 5.0GXi-D, 5.0GXi-DF, 5.0GXi-E, 5.0GXi-EF, 5.0GXi-J, 5.0GXi-JF, 5.0GXiE-JF, 5.0GXiE-J, 5.0GXiE-K, 5.0OSi-C, 5.0OSi-CF, 5.0OSi-D, 5.0GL-D, 5.0GL-E, 5.0GL-F, 5.0GL-FF, 5.0GL-HF, 5.0GL-J, 5.0GL-JF, 5.0GXi-270-R, 5.0GXiE-270-R, 5.0GXi-A, 5.0GXi-C, 5.0GXi-CF, 5.0GXiC-270-R, 5.0GXiCE-270-R, 5.0GXiC-J, 5.0GL-H, 5.0GXiE-KF, 5.0GXiE-M, 5.0GXiE-MF, 5.0GXiE-N, 5.0GXi-N, 5.0GXiE-P, 5.0GXi-P, 5.0GXi-F, 5.0GXi-FF, 5.0GXi-G, 5.0GXi-GF, 4.3Gi-200-R, 4.3GL-A, 4.3GL-B, 4.3GL-C, 4.3GL-D, 4.3GL-E, 4.3GL-EF, 4.3GL-G, 4.3GL-GF, 4.3GL-J, 4.3GL-JF, 4.3GL-P, 4.3GXi-225-R, 4.3GXiE-225-R, 4.3GXi-A, 4.3GXi-C, 4.3GXi-CF, 4.3GXi-D, 4.3GXi-DF, 4.3GXi-E, 4.3GXi-EF, 4.3GXiE-M, 4.3GXi-P, 4.3GXiE-P, 4.3GXi-Q, 4.3GXiE-Q, 4.3GXi-F, 4.3GXi-FF, 4.3GXi-G, 4.3GXi-GF, 4.3GXi-J, 4.3GXi-JF, 4.3OSi-C, 4.3OSi-D, 4.3OSi-E, 4.3OSi-F, 4.3OSi-FF, 4.3OSi-G - Volvo Penta V8-270-C-B, V8-270-CE-B, V8-300-A, V8-300-E-A, V8-300-B, V8-300-E-B, V8-300-C-A, V8-300-CE-A, V8-300-C-B, V8-320-C-B, V8-320-CE-B, V8-300-CE-B, V8-320-A, V8-320-E-A, V8-320-B, V8-320-E-B, V8-320-C-A, V8-320-CE-A, V8-225-C-A, V8-225-CE-A, V8-225-C-B, V8-225-CE-B, V8-270-A, V8-270-E-A, V8-270-B, V8-270-E-B, V8-270-C-A, V8-270-CE-A - Volvo Penta V6-200-A, V6-225-A, V6-225-E-A ## Details - **Price:** 10.64 AUD - **Vendor:** Volvo Penta - **Type:** Gaskets & Seals - **Tags:** Volvo Penta ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 10.64 AUD | In stock | ## Images - 983944 O-Ring | Genuine Volvo Penta Part - 983944 O-Ring | Genuine Volvo Penta Part - photo 2 of 2 --- > Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/983944-o-ring-genuine-volvo-penta) > Updated: 2026-09-13