F-150 3.5L EcoBoost Turbo Install Kit: What’s Inside, When to Use It & Shop Tips (2011–2020)

A clean, leak-free turbo install on the 3.5L EcoBoost lives or dies on the small parts—gaskets, O-rings, studs, and one-time-use bolts. This deep dive shows exactly what BD’s kits include for 2011–2016 and 2017–2020, why fresh hardware matters, and how to avoid repeat pulls on higher-mileage trucks.

Quick Summary: Both BD kits bundle the single-use hardware and seals you’ll replace anyway—downpipe studs/nuts, turbo mounting bolts, coolant & oil line O-rings, and inlet/outlet gaskets. Ideal when doing manifold service, chasing exhaust leaks, or swapping turbos. Links to related guides: 3.5L EcoBoost: 10 Common Issues • Stop EcoBoost Exhaust Leaks • BD Screamer Turbo Upgrades • 10R80 RoadMaster (2018–2020).

Kits at a Glance (What You Get)

Year Range Kit Link Core Contents
2011–2016 BD Turbo/Manifold Install Kit (’11–’16) • 8 coolant fittings
• 4 double-ended downpipe studs + 4 M10 nuts
• 6 turbocharger mounting bolts (single-use)
• Turbo & downpipe gaskets
Great add-on to a manifold job or turbo R&R on higher-mileage trucks.
2017–2020 BD Turbo Install Kit (’17–’20) • Inlet gaskets: 2017 (L&R) + 2018–20 (L&R)
• 2 outlet gaskets
• 4 coolant bushings + 10 coolant/oil O-rings + 4 oil drain O-rings
• 4 downpipe studs + 4 nuts
• 6 turbo mounting bolts (single-use)
Replaces OEM bolt P/Ns W715673S900, W719737S900; gasket P/Ns HL3Z-9450-A, HL3Z-9448-C, JL3Z-9450-A.

Why the “Small Stuff” Matters on EcoBoost Turbos

One-Time-Use Bolts

Turbo mounting bolts are torque-to-yield on many years. Re-using them can cause clamp-load loss, flange leaks, or broken bolts later. The kit includes fresh hardware so your new seals actually seal.

New O-Rings & Bushings

Heat-soaked coolant & oil line seals flatten and harden; tiny weeps become major messes post-service. Replace them while access is wide open.

When You Should Use the Kit

  • Exhaust tick, smell, or soot near manifolds/downpipes (pair with BD 3.5L manifold set on ’11–’16).
  • Oil mist at turbo center sections or along feed/drain lines (fresh O-rings included in ’17–’20 kit).
  • Turbo swap/upgrade—especially if you’re stepping up to BD Screamer drop-ins (’11–’16).
  • High mileage (heat-cycled hardware and seals won’t re-seal reliably).
Stack the job smart: If you’re already pulling downpipes and turbos, it’s the perfect time to fix persistent exhaust leaks (see BD manifold fix) and to evaluate transmission health on 2018–2020 trucks (see 10R80 RoadMaster guide).

At-a-Glance Install Flow (Overview)

  1. Disconnect battery, safely raise vehicle, remove under-tray/shields as needed.
  2. Drain/contain coolant as required. Relieve any residual pressure.
  3. Remove intake tubes, heat shields, and downpipe hardware. Support exhaust.
  4. Cap/label oil feed & drain and coolant lines before removal; note clocking/clip orientation.
  5. Remove turbos and old gaskets/bolts/studs; do not reuse torque-to-yield hardware.
  6. Install new inlet/outlet gaskets, studs, new turbo bolts, and fresh O-rings/bushings from your BD kit.
  7. Reconnect lines and downpipes. Torque all fasteners to factory specifications and follow service-manual sequences.
  8. Refill coolant, prime oil system, check for leaks, and complete a thorough test drive.

Tip: Photograph each connection before disassembly. Replace any brittle vacuum lines or damaged V-band clamps you find along the way.

Signs You’re Due for Seals/Hardware

Odor/Tick on cold start

Often an exhaust leak at the manifold or downpipe—fresh gaskets + studs prevent repeat visits.

Oil sheen at CHRA

Hard O-rings on feed/drain lines. Replace during turbo R&R, not after.

Coolant crust

Dried coolant around line bushings points to aged seals—swap them now.

Compatibility & Notes

2011–2016
Turbo/Manifold Install Kit — ideal with BD manifold set or Screamer upgrades.
2017–2020
Turbo Install Kit — includes multiple model-year inlet gaskets + all O-rings.
Hardware
Replaces turbo bolt P/Ns W715673S900, W719737S900 and gasket P/Ns HL3Z-9450-A, HL3Z-9448-C, JL3Z-9450-A (’17–’20).
Warranty
Install kit parts: 90-Day (see product pages for full terms).

Related BD Parts & Guides

FAQ

Do I have to replace the turbo mounting bolts?
Yes—many are single-use. Re-using them risks clamp-load loss and leaks. Both BD kits include new bolts.

Can I reuse coolant and oil line O-rings?
Not recommended. Heat cycles harden seals; reuse can lead to post-install seeps. The ’17–’20 kit bundles all new O-rings/bushings.

Are torque specs included?
Follow the Ford service manual for your exact year and build. Always clean sealing surfaces and tighten in the correct sequence.

Ready for a leak-free turbo install? Pick your kit: 2011–2016 • 2017–2020. If you’re also chasing exhaust leaks, pair the kit with the BD manifold set and follow our manifold fix guide.

Note: Contents and compatibility are summarized for convenience—verify fitment on each product page for your exact VIN and model year.