FORD TRUCKS HL3Z6250K Engine Motor Right Passenger Cylinder 3.5 Head

( Brand: Ford Trucks ), ( Manufacturer Part Number: HL3Z6250K ), ( Interchange: 306-10098 ), ( Type: Cylinder Head ), ( Year: 19 ), ( Oe/oem Part Number: Hl3z6049g, Hl3z6250e, Hl3z6250c, Hl3z6250a, Hl3z6250f, Hl3z6250l ), ( Id: E1390dd9-0013-40d4-9947-8687bc2ecafc ), ( Country Of Origin: United States ), ( Partout Id: A-125352011 )

Review FORD TRUCKS 3.5 Engine Motor Right Passenger Side Cylinder Head fits EXPEDITION TURBO 2018–2021

The **Ford HL3Z6250K 18-21 Expedition 3.5L EcoBoost Turbocharged V6 Engine Right Passenger Cylinder Head** is a precision-engineered component designed for the high-performance demands of Ford s iconic full-size SUV, the Expedition. This cylinder head represents the pinnacle of modern automotive engineering, crafted to deliver exceptional power, efficiency, and reliability in one of the most robust and versatile powertrain configurations available. Built from high-grade **cast aluminum alloy**, this right-side cylinder head is engineered to withstand the extreme thermal and mechanical stresses generated by the **3.5L EcoBoost turbocharged V6**, which produces a robust **300 horsepower and 375 lb-ft of torque** enough to propel the Expedition through demanding towing, hauling, and off-road scenarios with ease. The head features a **dual overhead camshaft (DOHC) design**, incorporating **four valves per cylinder (two intake and two exhaust)** to optimize airflow and combustion efficiency, ensuring a smoother, more responsive throttle response while minimizing emissions. The **intake ports** are meticulously contoured to enhance airflow velocity, promoting better fuel-air mixture distribution and improved combustion, while the **exhaust ports** are designed to efficiently expel spent gases, reducing backpressure and further boosting engine performance. Integral to its functionality is the **turbocharger integration**, with precise routing for the **intercooler and turbocharger wastegate**, allowing for optimal boost delivery and preventing overheating under heavy loads. The cylinder head also incorporates **advanced cooling passages**, including **high-flow water jackets** and **oil galleries**, to dissipate heat rapidly and protect critical components from thermal degradation. For durability, the head is equipped with **high-strength fasteners**, including **torque-to-yield bolts** and **stainless steel nuts**, ensuring a secure and leak-proof assembly even under the most demanding conditions. Additionally, it features **modern valve train components**, such as **hydraulic lifters** for zero-lash operation and **solid or roller rocker arms**, depending on the model year, which reduce friction and wear while maintaining precise valve timing. This cylinder head is a critical component in Ford s **EcoBoost lineup**, which balances power with fuel efficiency through **direct fuel injection, variable valve timing (VVT), and turbocharging**, all of which are finely tuned to work in harmony with the cylinder head s design. Whether installed in a **2018, 2019, 2020, or 2021 Expedition**, this part is essential for maintaining the engine s performance, longevity, and reliability, making it a must-have replacement for those seeking to restore or upgrade their vehicle s powertrain. With its **precision machining, high-quality materials, and Ford s signature engineering expertise**, this cylinder head is a testament to the brand s commitment to delivering a robust, high-performance drivetrain capable of handling everything from daily commutes to extreme off-road adventures.

### **Pros and Cons of Buying a Replacement Right-Passenger Cylinder Head for a Ford HL3Z6250K (2018-2021 Expedition 3.5L EcoBoost Engine)**

1. **Restores Engine Performance** A failing cylinder head can lead to misfires, power loss, and poor fuel efficiency. Replacing it restores proper combustion, improving acceleration, towing capacity, and overall drivability.

2. **Prevents Long-Term Damage** Ignoring a bad cylinder head can cause further engine damage, including warped heads, cracked blocks, or even catastrophic failure. Addressing it early avoids costly repairs down the line.

3. **Maintains Warranty Coverage (If Applicable)** If the cylinder head failure is due to a manufacturing defect (e.g., casting flaws in early EcoBoost engines), some owners may still have warranty coverage or extended service plans that could cover part or labor costs.

4. **Improves Fuel Economy** A properly functioning cylinder head ensures optimal air-fuel mixture, which can lead to better fuel efficiency compared to a misfiring or leaking head.

5. **Increases Engine Longevity** Replacing a faulty head prevents excessive heat buildup, oil dilution, or carbon buildup, which can shorten the engine s lifespan if left unaddressed.

6. **Available OEM and Aftermarket Options** Ford offers genuine replacement parts, and reputable aftermarket brands (e.g., Ford Performance, JE, or Summit Racing) provide high-quality alternatives at a lower cost.

7. **DIY Potential for Mechanically Inclined Owners** While complex, the job is manageable with the right tools and patience. Many owners opt to replace the head themselves to save on labor costs.

---

1. **High Cost** Replacement cylinder heads are expensive, especially if purchasing OEM parts. Aftermarket options are cheaper but may lack long-term durability. Labor costs for professional installation can also be significant (typically $1,500 $3,500 depending on shop rates).

2. **Complex Installation** Removing and replacing a cylinder head requires disassembling much of the engine, including the intake manifold, exhaust headers, and cooling system. This is a labor-intensive job that demands mechanical skill and precision.

3. **Potential for Additional Issues** During disassembly, other components (e.g., gaskets, seals, or even the engine block) may show signs of wear. This could lead to unexpected repair costs if they need replacement.

4. **Risk of Improper Installation** If not done correctly, improper sealing, torque specifications, or gasket application can cause leaks, overheating, or even head gasket failure in the future. This underscores the importance of using high-quality gaskets and following service manuals precisely.

5. **Time-Consuming Process** A full cylinder head replacement can take 10 20 hours of labor, depending on the mechanic s experience. This means the vehicle will be out of commission for an extended period.

6. **Warranty Void Risk** If the vehicle is still under warranty, attempting a DIY replacement (or using non-OEM parts) could void coverage. Ford s powertrain warranty may not cover aftermarket parts, even if the failure was due to a defect.

7. **Potential for Recurring Problems** If the underlying cause (e.g., poor maintenance, oil contamination, or internal engine issues) isn t addressed, the new cylinder head may fail again in the future.

---

Replacing a faulty right-passenger cylinder head in a 2018 2021 Ford Expedition with a 3.5L EcoBoost engine is a **necessary repair** to prevent further damage and restore performance. However, it is a **significant financial and labor-intensive** undertaking. The decision to proceed depends on whether the cost is justified by the engine s remaining lifespan and the owner s mechanical comfort level.

If the engine is otherwise healthy and the failure is isolated to the cylinder head, replacement is the best long-term solution. If the vehicle has high mileage or other underlying issues, the repair may not be worth the investment, and alternatives like a used engine or a different vehicle might be more practical.

---

1. **Get a Professional Diagnosis** Before purchasing a replacement, have a trusted mechanic inspect the engine for other potential issues (e.g., oil leaks, carbon buildup, or block cracks). This ensures you re not paying for a repair that could lead to further problems.

2. **Choose Quality Parts** If buying aftermarket, select a reputable brand with a proven track record for EcoBoost engines (e.g., JE, Summit Racing, or Ford Performance). Avoid the cheapest options, as they may fail prematurely.

3. **Consider Labor Costs** If you re not comfortable with engine disassembly, factor in professional labor costs. Some shops offer package deals for cylinder head replacements, which can save money.

4. **DIY vs. Professional Installation** If you have experience with engine work, a DIY approach can save hundreds or thousands in labor. However, if you re unsure, hire a specialist with EcoBoost experience to avoid mistakes.

5. **Check for Warranty or Extended Coverage** If the failure is due to a known defect (e.g., early EcoBoost head gasket issues), check if your warranty or extended service plan covers it. Some owners have had success with Ford s customer service for partial reimbursement.

6. **Budget for Contingencies** Allocate extra funds for potential additional repairs (e.g., new gaskets, seals, or even a new engine if the block is damaged). This prevents financial strain if unexpected issues arise.

7. **Weigh the Vehicle s Value** If the Expedition has high mileage or other major repairs needed, consider whether the cost of the cylinder head replacement is justified compared to the vehicle s remaining useful life.

**Final Verdict:** If the engine is otherwise sound and the cylinder head failure is confirmed, replacing it is the best way to restore performance and prevent catastrophic failure. However, weigh the costs carefully and ensure the repair is done correctly to avoid future issues. If the vehicle s condition is poor, alternative solutions may be more practical.

Details:

Redeliver, limited access fees. If listing states free shipping, shipping is within the 48 only. Also, any tests that can possibly be done prior to installation should completed at time. Over 600,000 parts on inventory.

This item is from a 19 FORD EXPEDITION. Over 6,000 vehicles in the yard and more arriving daily. Local delivery available to local businesses only. Cylinder Head.

Model: FORD EXPEDITION.

part #: hl3z6250k prices

• $50.15-$134.83

specifications cylinderheapar:

• for models: Turbo, Expedition
• for makes: Ford
• for years: 2018-2021
• brand: Ford Trucks
• mpn: Hl3z6250k
• interchange: 306-10098
• type: Cylinder Head
• year: 19
• oe/oem part number: Hl3z6049g, Hl3z6250e, Hl3z6250c, Hl3z6250a, Hl3z6250f, Hl3z6250l
• id: E1390dd9-0013-40d4-9947-8687bc2ecafc
• country of origin: United States
• partout id: A-125352011

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

payments cylinderheapar:

• wallet: Apple-pay
• credit card: Visa
• other

seller cylinderheapar:

• rating: 99.9%
• city: Cochranton, Pennsylvania
• # reviews: 33855

offer cylinderheapar:

• options: Ship-to-home
• quantity: 1
• started: April 30, 2026
• sold: 0
• availability: In Stock

shipping cylinderheapar:

• transit: 2-6 Days
• type: Fixed
• service: Standard
• cost: $109.99
• class: Standard

returns cylinderheapar:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

Ford Trucks HL3Z6250K Is Similar To:

• 01a 10990 Ford Motor Company Car And Truck Nos Lh Head Mounted (29.1% similar) This sender is an nos Ford assembly line original and has never been installed. This sender or excessive heat indicator bulb was mounted in the LHS cylinder head on all 1942 thru 1948 Ford passenger cars and 1947 commercial vehicles Trucks. This is an nos temperature sender complete with wire ...(May 7th, 2018)
• 053030-2 Ford Sbf 180cc Windsor Complete Cylinder Head Jr World Intake (35.9% similar) Headquarters. Headquarters. Same day shipping is dependent on the time of day the order is placed...(April 8th, 2015)
• Ford 302 071428 Heads Cylinder 1969 (30.5% similar) C9TE no visible cracks or warping. Condition unknown Ford cylinder heads...(April 4th, 2015)
• 1070.300 Offenhauser Hp Ford Flathead Offy Cylinder Heads (30.1% similar) This is a rare opportunity to get set of unused heads. Iffy Hans't made these in a long time. Iffy new old stock 60 hp heads with water pipes. A little dusty with some minor handling nicks scratches but otherwise cherry. No box, gaskets...(January 12th, 2019)
• 1100-1300-1600 Ford Head For Early Kent (13.3% similar) The head worked very well when removed from my race car in fall of 2015 for 'freshening. The front of head area thermostat housing has only one drilled and tapped hole see images. The valves have just been freshly re-lapped, so head is ready to use. I am not aware of which cars this would ...(February 11th, 2017)
• 1115 Edelbrock Vtg Ford Flathead Hot Rod Kustom Cylinder Heads Scta (31.9% similar) A vintage pair of outbreak Ford Flathead fined heads in good used condition. Abrasions, dings, patina, etc...(November 9th, 2018)
• 116e-6050-f English Ford Cortina Gt Cylinder Head (31.7% similar) No visible cracks between water ports. In good condition. Ford Corina '65 complete cylinder head. Needs refurbishment...(July 23rd, 2018)
• 1176bs Victor Nos Nors Ford Edsel Mercury Car Truck Cylinder Head (29.8% similar) If you are out of the country please understand this while buying on item. This can take anywhere from 1 week to months. Please also listings for thousands more nos parts available immediate purchase. When you homepage just enter the year, make and or model of your vehicle in search bar. You are ...(April 7th, 2018)
• Kit 1949-1953 Arp 154-4102 Edelbrock Ford Head Stud Heads Flathead (19.8% similar) New APR head stud kit, Ford Flathead w outbreak heads speedway part condition new part brand APR manufacturer part sold as kit item details info these APR head stud kits are designed specially for Flathead Ford engines with outbreak aluminum cylinder heads. Same day shipping is dependent on the time...(April 8th, 2015)
• 154-4103 Arp Fasteners Head Stud Kit Ford Flathead For 672036043056 (19.6% similar) None of those studs were straight and the heads could not be installed if screwed into block. For use with offense cylinder heads specs material type steel sold in quantity box notes includes: 48 studs, washers, and acorn nuts. Trust the strength and quality of APR studs for your Flathead engine. ...(May 10th, 2018)
• 170-200-250 Ford 6 Cylinder Ci Factory Nos Steel Shim Head Gasket Code-6051-c (23.1% similar) ...(June 15th, 2016)