1256394 Guide Sleeve | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta guide sleeve for D3 series marine diesel engines. This small locating sleeve positions and aligns mating components during assembly, keeping bolted joints and machined faces correctly registered. It is a low-cost consumable that is best replaced whenever the assembly it serves is dismantled.

🚤 Compatibility

• Engine Family: D
• HP Range: 110-220 HP
• Year Range: Approximately 2003-2016, engine suffix and block revision controlled

Full model list at the end of this description.

⚙️ Key Features

• OEM Volvo Penta part number 1256394
• Fits D3 series marine diesel engines in both inboard and sterndrive configurations
• Net weight 0.01 kg
• Precision locating component for correct alignment of mating parts
• Supplied as a single sleeve
• Engine type: Volvo Penta D3 five-cylinder common-rail marine diesel
• 2 used per assembly

🔌 Function

The guide sleeve locates and aligns two mating components so they seat in the correct position relative to one another during assembly. It transfers shear load across the joint and prevents the parts from shifting once fastened.

⚠️ Common Signs of Failure

• Visible wear, scoring or ovality on the sleeve body
• Loose or sloppy fit in its bore, allowing component movement
• Misalignment or uneven seating of the mating parts on reassembly
• Corrosion or seizing making removal difficult
• Deformation or cracking from previous over-driving or impact

🛠️ Service Notes

• Check the sleeve and the part that runs in or on it for scoring, ovality, corrosion and pick-up; renew both if either is worn, since a worn pair will never locate correctly
• Clean the bore and the housing before fitting and remove any burrs or corrosion that would stop the sleeve going fully home
• Press or drive the sleeve in square with a tool that bears on its end face rather than on its bore or edge, and seat it fully against its shoulder
• Where the sleeve carries lubricant or a seal, make sure any oil hole lines up, and renew the adjacent seal or O-ring at the same time
• Check that the shaft or fastener it guides moves without binding once the sleeve is home

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 20405906 related later guide-sleeve reference in specified applications

OEM / Related Numbers

• 20405906 related reference
• 981713 related cylinder-block plug
• 9458178 sealing ring
• 1383730 locating pin
• 1366129 related guide sleeve
• 30713237 block plug
• 30750790 piston-cooling jet

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta D3-110I-B, D3-110I-C, D3-130I-C, D3-220I-G, D3-130A-A, D3-160A-A, D3-130A-B, D3-160A-B, D3-130A-C, D3-160A-C, D3-140A-D, D3-170A-D, D3-200A-D, D3-220A-D, D3-140I-D, D3-140A-E, D3-170A-E, D3-200A-E, D3-220A-E, D3-140I-E, D3-140A-F, D3-170A-F, D3-200A-F, D3-220A-F, D3-140I-F, D3-140A-G, D3-170A-G, D3-200A-G, D3-220A-G, D3-140I-G, D3-190A-B, D3-190A-C, D3-190I-A, D3-110I-A, D3-130I-A, D3-160I-A, D3-110I-D, D3-150I-D, D3-170I-D, D3-200I-D, D3-220I-D, D3-110I-E, D3-150I-E, D3-170I-E, D3-200I-E, D3-220I-E, D3-110I-F, D3-150I-F, D3-170I-F, D3-200I-F, D3-220I-F, D3-110I-G, D3-150I-G, D3-170I-G, D3-200I-G, D3-110I-H, D3-160I-C, D3-190I-B, D3-190I-C, D3-140A-H, D3-170A-H, D3-200A-H, D3-220A-H, D3-130I-B, D3-160I-B, D3-150I-H, D3-170I-H, D3-200I-H, D3-220I-H, D3-140I-H