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Exhaust Valve Compatible With 2012-2018 Kobelco Sk55srx Qsb3.3 3.3L 4-Cyl Diesel Excavator 5309399

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C5309399A4
OEM PART NUMBERS:
• Cummins: 5309399 (Primary OEM number)

SPECIFICATIONS:
• Type: Exhaust
• Engine: QSB3.3
• Displacement: 3.3L
• Condition: New

APPLICATION:
• Compatible with Caterpillar 303.5E/304E/305E2 (2012-2018)
• Compatible with Case SR175/SR200/SR220/SV185 (2012-2018)
• Compatible with Kobelco SK55SRX (2012-2018)

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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Sale: $80.90
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Description

CATERPILLAR EXCAVATORS:
• Caterpillar 303.5E/304E/305E2 C3.3B/QSB3.3 3.3L Diesel (2012-2018)

CASE SKID STEERS:
• Case SR175/SR200/SR220/SV185/SV250/SV300 QSB3.3 3.3L Diesel (2012-2018)

KOBELCO EXCAVATORS:
• Kobelco SK55SRX QSB3.3 3.3L Diesel (2012-2018)


IMPORTANT:
EXHAUST valve for Cummins QSB3.3 engines (3.3L, 4-cylinder, common rail). The QSB3.3 is also known as B3.3, and in Caterpillar equipment it is branded as C3.3B. The Kubota V3307 is the base engine design. All of these designations refer to variants of the same engine family — but verify the specific Cummins part number, as valve specs can vary between mechanical (B3.3) and common rail (QSB3.3) versions. Requires 4 exhaust valves per engine. Do NOT confuse with intake valve 5271471.

Fits Cat 303.5E/304E/305E2 mini excavators (branded as C3.3B), Case SR175-SV300 skid steers, and Kobelco SK55SRX. When replacing, inspect valve guides for wear and valve seats for pitting/erosion. Replace valve stem seals. Check spring free length and adjust valve lash per Cummins service manual after reassembly.

⚠️ Exhaust only — for intake, order 5271471. Confirm QSB3.3 vs B3.3 version.

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  • Item Requires Shipping
  • 0.1 lbs.
  • W4.0000” x H3.0000” x L6.0000”
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