Wacker Neuson 5200010252 Exhaust Pipe Doc Lower G70 T4I

The Wacker Neuson Exhaust Pipe Doc Lower G70 T4I is a genuine OEM component designed for the G70 Generator T4i series. Sourced directly from Wacker Neuson, this part carries the same specifications as the original — ensuring it seats, seals, and routes correctly within the exhaust system of your G70 unit. Confirmed fitment spans the full G70 T4i lineup, including Custom T4i, Standard T4i, Cold Weather T4i, Extended Run T4i, Hertz T4i, and URI HVAC configurations. When the lower DOC exhaust pipe cracks, corrodes, or develops leaks, replacing it promptly with the correct OEM part keeps the exhaust aftertreatment system functioning as designed.

Key Features

• Genuine OEM Exhaust Integrity — Manufactured to the same material grade and dimensional spec as the original, so joints seal correctly and exhaust gases route as intended through the DOC system.
• Drop-In Lower DOC Connection — Designed to connect directly to the Diesel Oxidation Catalyst assembly in the G70, with OEM-matched flanges and mounting points that align without modification.
• Broad G70 T4i Coverage — Fits Custom, Standard, Cold Weather, Extended Run, Hertz, and URI HVAC variants of the G70 T4i generator family — one part number serves the full range.
• Aftertreatment System Performance — A sound lower DOC pipe maintains proper exhaust flow and backpressure, which is essential for the generator's Tier 4 Final emissions system to operate within spec.
• Emissions Compliance Critical — On Tier 4i-certified equipment, a compromised exhaust pipe can trigger fault codes, derate engine output, or cause the unit to shut down. Replacing with the correct OEM part helps maintain regulatory compliance and uninterrupted operation.

The lower DOC exhaust pipe routes exhaust gases from the engine into the Diesel Oxidation Catalyst, which is a core component of the G70's Tier 4 Final emissions aftertreatment system. The DOC chemically reduces harmful exhaust pollutants before gases exit the machine, and the lower pipe must maintain a leak-free seal for this process to work correctly. When this pipe cracks, corrodes, or develops a leak, exhaust gases can bypass the DOC, triggering emissions faults, engine derates, or unplanned shutdowns on the job.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.