Name: PAI 121331 Turbocharger O-Ring Seal – Replaces Cummins 3957131 – ISB / ISX / X15
Brand: PAI
SKU: 121331I
Price: 1.43 USD
Availability: InStock

PAI 121331 Turbocharger O-Ring Seal – Replaces Cummins 3957131 – ISB / ISX / X15

$1.43

MA3I – AI 121331 is a Buna-N turbocharger-related O-ring seal that directly replaces Cummins 3957131. PAI-derived catalog data and multiple heavy-duty parts sources independently map 121331 → 3957131. Cummins parts documentation shows 3957131 as an O-ring included in turbocharger installation/service kits, and Cummins application data also places it at a turbocharger coolant-line fitting on certain…

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Description

MA3I –

AI 121331 is a Buna-N turbocharger-related O-ring seal that directly replaces Cummins 3957131. PAI-derived catalog data and multiple heavy-duty parts sources independently map 121331 → 3957131.

Cummins parts documentation shows 3957131 as an O-ring included in turbocharger installation/service kits, and Cummins application data also places it at a turbocharger coolant-line fitting on certain ISB applications

Verified specifications:

Inside diameter: 0.364 in / 9.25 mm
Cross section: 0.070 in / 1.78 mm
Material: Buna-N
Durometer: 75
AS568 size: -012
Finish: Peroxide cured

Crosses

121331, 3957131, 1842114, 1842114C1, 4333-1842114C1, M-3957131, M3957131, M-1842114C1, M1842114C1, AS568A-012

Additional information

Weight	.3 lbs
Dimensions	3 × 3 × 1 in

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