31079S Complete Timing Chain Kit with 4 VVT Cam Sprockets
For Ford/Lincoln 3.5L Twin-Turbo EcoBoost V6 (2017–2022)
OE Reference: ML3Z-6C525-A, ML3Z-6256-A, HL3Z-6268-A
3.5 EcoBoost Timing Kit Assembly
Vehicle Fitment
Only fits vehicles equipped with Gen2 3.5L V6 EcoBoost twin-turbo engine
- Ford F-150 3.5L EcoBoost 2017–2020
- Ford Expedition 3.5L EcoBoost 2018–2021
- Lincoln Navigator 3.5L EcoBoost 2018–2022
OEM Cross Reference Part Numbers
Full Timing Chain Kit Assembly
31079S, 3-1079S, 90954S
Main Timing Chain: HL3Z-6268-A
Timing Guide Rails: HL3Z-6K255-B, HL3Z-6B274-B, HL3Z-6K255-A, HL3Z-6B274-A
Hydraulic Tensioners: HL3Z-6L266-A, HL3Z-6L266-C
Crankshaft Timing Sprocket: HL3Z-6306-A
VVT Cam Phaser Sprockets
Intake VVT Sprocket: ML3Z-6256-A, VVT799, 916776
Exhaust VVT Sprocket: ML3Z-6C525-A, VVT800, 916777
Complete Package Contents
1 Full timing chain assembly (dual timing chains, 4 guide rails, left/right hydraulic tensioners, crank sprocket)
2 Intake VVT cam phaser sprockets
2 Exhaust VVT cam phaser sprockets
All components match the main product display image.
Core Product Advantages
- Direct OEM replacement timing set designed for heavy-duty twin-turbo EcoBoost operation, solves common failure symptoms: cold start rattling, timing chain stretch, VVT phase deviation, P0010/P0011/P0020/P0021 fault codes, rough idle, hesitation under acceleration and power loss.
- Reinforced heat-treated alloy timing chains resist elongation and fatigue under high turbo boost loads; reinforced composite guide rails prevent cracking and chain jump that can lead to catastrophic valve damage.
- Updated hydraulic auto-adjust tensioners maintain consistent chain tension across all RPM ranges, eliminating internal oil leakage inside tensioner housings.
- 4 brand-new OEM-spec VVT phasers restore precise variable valve timing, stabilize fuel economy and eliminate sluggish throttle response typical of worn original cam sprockets.
- All-in-one complete timing service combo eliminates separate sourcing of chains, guides, tensioners and VVT phasers, ideal for professional repair shops and DIY truck/SUV engine rebuilders. Every part matches factory dimensions for bolt-on installation without modification.
Purchase Reminder
Carefully verify product photos, OEM part numbers, vehicle model, production year and confirm 3.5L EcoBoost engine before ordering to guarantee accurate fitment. Contact our support team anytime for compatibility verification if unsure.
Warranty Policy
1-Year limited warranty covering manufacturing defects. Our customer service provides timely pre-sales matching checks and post-install technical guidance for all buyers.
| Year | Make | Model | Engine |
|---|---|---|---|
| 2017-2020 | Ford | F-150 | 3.5L Turbo |
| 2018-2021 | Ford | Expedition | 3.5L Turbo |
| 2018-2022 | Lincoln | Navigator | 3.5L Turbo |
Related Products
New
-2%
$390.99
$400.00
New
-5%
$242.88
$255.00
New
-3%
$237.88
$245.00
Sleeve High Neck Bodycon Dress
$132.00
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam fringilla augue nec est tristique auctor. Donec non est at libero.