Exhaust Downpipe: Installation

WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Note the position of the exhaust upper downpipe clamp from disassembly.

NOTE: Do not tighten the upper downpipe clamp at this time.

Disengage the new exhaust upper downpipe clamp T-bolt. While positioning the exhaust upper downpipe, loosely position the clamp over the turbocharger flange and the exhaust upper downpipe flange.

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NOTE: Only hand tighten the exhaust upper downpipe bracket bolt at this time.

Install and hand tighten the exhaust upper downpipe bracket bolt.

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Engage the new exhaust upper downpipe clamp T-bolt and position the clamp as noted during disassembly.
Torque: 159 lb.in (18 Nm)

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Tighten the exhaust upper downpipe bracket bolt.
Torque: 18 lb.ft (25 Nm)

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NOTE: Note the position of the exhaust lower downpipe clamp from disassembly.

NOTE: Do not tighten the exhaust lower downpipe clamp at this time.

Loosely position the exhaust lower downpipe into the exhaust upper downpipe.

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NOTE: Do not tighten the exhaust lower downpipe bracket nuts at this time.

Install the exhaust lower downpipe bracket nuts finger tight.

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NOTE: Only hand tighten the exhaust lower downpipe-to-catalyst and particulate filter assembly bolts at this time.

Install the new exhaust lower downpipe-to-catalyst and particulate filter assembly bolts and hand tighten.

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Tighten the exhaust lower downpipe bracket nuts.
Torque: 22 lb.ft (30 Nm)

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NOTE: Note the position of the exhaust lower downpipe clamp from disassembly.

NOTE: Make sure the exhaust upper and lower downpipes are aligned and fully seated together before tightening the clamp.

Tighten the exhaust upper downpipe clamp.

Torque: 41 lb.ft (55 Nm)

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Tighten the exhaust lower downpipe-to-catalyst and particulate filter assembly bolts.
Torque: 26 lb.ft (35 Nm)

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Install the transmission fluid cooler tubes. Refer to: Transmission Fluid Cooler Tubes - 6.7L Power Stroke Diesel, 6-Speed Automatic Transmission - 6R140 .
Install the upper intake manifold. Refer to: Upper Intake Manifold .
Check the exhaust system for leaks.