21528140 Spacer Sleeve | Genuine Volvo Penta Part

🔧 Product Description

Precision spacer sleeve installed in the turbocharger and exhaust-manifold mounting arrangement on Volvo Penta 12-litre generator engines. It establishes the correct stand-off and clamp load at the specified fastener or pipe support point, preventing distortion and maintaining turbocharger alignment.

🚤 Compatibility

• Engine Family: TWD, TAD

Full model list at the end of this description.

⚙️ Key Features

• Genuine Volvo Penta turbocharger mounting spacer
• Used in the TAD1240GE turbocharger installation
• Works with turbocharger 3802135 in the applicable arrangement
• Maintains correct bolt spacing and component alignment
• Machined sleeve for controlled clamp load
• Engine type: 12.1-litre inline-six turbocharged generator diesel
• Quantity varies by assembly, most commonly four

🔌 Function

Sets the correct spacing and fastener support in the turbocharger assembly so mounted components remain aligned and correctly clamped.

⚠️ Common Signs of Failure

• Loose turbocharger bracket or pipe support
• Uneven clamp load
• Crushed, worn or missing sleeve
• Fastener repeatedly loosening
• Misalignment causing oil or exhaust leakage

🛠️ Service Notes

• A spacer sleeve sets a fixed length in the joint — never leave one out, shorten one, or substitute a stack of washers, or the clamping load and alignment will both be wrong
• Check that the sleeve is square and fully seated in its counterbore or recess before any fastener is tightened
• Discard a sleeve that is crushed, bell-mouthed, scored or corroded; a shortened sleeve lets the joint be over-clamped and the component distorted
• On sleeves in an oil circuit, make sure the bore is clear and that any seal running on the sleeve has a clean, unscored surface to work against
• Tighten the joint to the figure in the workshop manual for your engine, with the sleeve taking the clamping load rather than the component it protects

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• VOE21528140

Aftermarket / Verified Equivalents

• Associated turbocharger: 3802135
• Associated oil return pipe: 3826658

📦 Condition

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

🔎 Full Model Compatibility

Typically suits:

• Volvo Penta TAD1241GE, TAD1241VE, TAD1241-42VE
• Volvo Penta TAD1242GE, TAD1242VE
• Volvo Penta TAD1250VE, TAD1250-52VE
• Volvo Penta TWD1683GE-B, TWD1683VE
• Volvo Penta TAD1240GE
• Volvo Penta TAD1251VE
• Volvo Penta TAD1252VE
• Volvo Penta TAD1640-42GE-B
• Volvo Penta TWD1240VE
• Volvo Penta TWD1643GE
• Volvo Penta TWD1644-45GE
• Volvo Penta TWD1652GE
• Volvo Penta TWD1653GE
• Volvo Penta TWD1663GE
• Volvo Penta TWD1672-1673GE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1744GE