1. Engine Cooling Components Deals
  2. sku: 19879756552171861
  3. MERCEDES 109-51290

MERCEDES 109-51290 Radiator Core Benz 5.5L

fits model: S63, Amg. make: Mercedes. year: 2017.

109-51290 Mercedes-benz 17 2017 S63 Amg 222 Type Sedan 5.5l Radiator Core Support

( Part Type: Radiator ), ( Conditions Options: Assy, With Rebar ), ( Genuine Oem: Yes ), ( Ipn: 109-51290 ), ( Make: Mercedes-benz ), ( Descriptionpartcondition: With Rebar And Horns. If The Core Support Is A Cut, Contact Us Be ), ( Manufacturer Warranty: Unspecified Length )

Review MERCEDES benz Type Sedan 5.5l Radiator Core Support fits S63 AMG 2017

The **Mercedes-Benz 109-51290-17 (2017 S63 AMG 5.5L) Radiator Core** is a high-performance, precision-engineered component designed exclusively for the iconic **S63 AMG** lineup, specifically tailored to the **2017 model year** with its **5.5-liter twin-turbocharged V8 engine**. This radiator core is a critical element of the vehicle s advanced cooling system, ensuring optimal thermal management under the extreme demands of high-performance driving, aggressive acceleration, and sustained high-speed operation. Crafted from **high-grade aluminum alloy**, this core features an intricate **multi-pass serpentine design** that maximizes heat dissipation efficiency while minimizing pressure drop, allowing for superior airflow and liquid cooling performance. The **precision-machined fins** are strategically arranged to optimize heat transfer, preventing overheating even during prolonged track sessions or high-load conditions. Compatible with the **S63 s advanced cooling architecture**, this radiator core integrates seamlessly with the **electric cooling fan, intercooler, and oil cooler**, forming a cohesive thermal management network that sustains peak engine performance and longevity. Built to meet **OEM specifications**, it ensures a perfect fit with the **2017 S63 s radiator housing and mounting brackets**, eliminating the risk of leaks or improper sealing. Whether used for **restoration, replacement, or performance enhancement**, this radiator core is a **direct-fit, high-quality alternative** to the original equipment, offering the same level of reliability and cooling efficiency that Mercedes-Benz AMG demands. Ideal for enthusiasts seeking to maintain the **purity of their S63 s factory performance**, this component is a testament to Mercedes-Benz s engineering excellence, delivering the cooling power necessary to keep the **5.5L twin-turbo V8** operating at its optimal temperature range, even under the most demanding circumstances.

### Pros and Cons of Buying a Mercedes-Benz S63 AMG (109.512.90.17, 2017, 5.5L) with a Radiator Core Issue

#### **Pros**

1. **Performance and Power** The S63 AMG is one of the most powerful Mercedes-Benz models of its era, featuring a twin-turbocharged 5.5L V8 engine producing around **585 612 hp** (depending on the market) and **650 700 lb-ft of torque**. This provides exhilarating acceleration and high-speed stability.

2. **Luxury and Comfort** Mercedes-Benz is renowned for its premium interior, offering high-quality materials, advanced infotainment (MBUX or earlier systems), and a refined ride quality. The S63 retains the signature S-Class luxury experience.

3. **Reliability of the Core Components** The 5.5L M177 engine, while complex, is a well-engineered unit when properly maintained. Many S63 models from this era have lasted well beyond 100,000 miles with regular servicing.

4. **Resale Value** The S-Class, especially in AMG trim, holds its value better than most luxury vehicles. A well-maintained 2017 S63 will still command a strong resale price.

5. **Advanced Safety and Technology** The 2017 S-Class comes equipped with cutting-edge safety features (adaptive cruise control, lane-keeping assist, blind-spot monitoring) and a sophisticated infotainment system with navigation and connectivity options.

6. **Exclusivity and Prestige** Owning an S63 AMG carries significant prestige, appealing to enthusiasts who value both performance and luxury.

7. **Potential for Modifications** The S63 s high-performance nature makes it a candidate for aftermarket upgrades (exhaust, suspension, tuning), though this should be approached carefully to avoid voiding warranties or damaging the vehicle.

---

#### **Cons**

1. **Radiator Core Issue (Primary Concern)** The **109.512.90.17** radiator core is known to have **cooling system failures**, particularly with **plastic core blockages** or **leaks** due to poor material quality. This can lead to:

- **Overheating** (risking engine damage if prolonged)

- **Coolant leaks** (leading to low coolant levels and potential coolant system contamination)

- **Expensive repairs** (radiator replacement can cost **$1,500 $3,000 ** depending on labor and parts)

- **Warranty concerns** (if the issue is pre-existing, the seller may not cover it)

Some owners report that **Mercedes has issued recalls or extended warranties** for this specific radiator part, but availability of replacements can be inconsistent.

2. **High Maintenance Costs** AMG models, especially V8 engines, require **specialized servicing**, including:

- **Expensive oil changes** (synthetic AMG oil, often **$200 $400 ** per change)

- **Turbocharger and intercooler maintenance** (prone to carbon buildup and wear)

- **Suspension and brake upgrades** (AMG models push tires and brakes harder than standard S-Class cars)

- **Electrical system quirks** (MBUX or earlier systems can be finicky)

3. **Fuel Economy** The **5.5L V8** is thirsty, averaging **12 15 MPG combined** (city/highway). This leads to **high fuel costs**, especially for long commutes or highway driving.

4. **Complexity and Repair Challenges** The S63 s **high-performance nature** means that repairs (especially electrical or engine-related) can be **time-consuming and costly**. Finding qualified AMG specialists may require travel to authorized dealerships.

5. **Depreciation** While the S-Class retains value well, **luxury hypercars and high-performance models depreciate faster** than standard sedans. A 2017 S63 may lose **20 30% of its value in 5 years**.

6. **Potential for Hidden Issues**

- **Transmission (9G-Tronic)** Some early AMG models have reported **transmission fluid degradation** or **software glitches**, leading to rough shifts or premature wear.

- **Exhaust Manifold Leaks** The **turbocharged V8** can develop **leaks at the exhaust manifolds**, requiring costly replacements.

- **Suspension Wear** The **adaptive dampers and air suspension** can fail prematurely, leading to **poor ride quality or handling issues**.

7. **Insurance Costs** The S63 AMG is a **high-risk vehicle to insure** due to its value, performance, and potential for costly repairs. Premiums can be **2 3 times higher** than a standard luxury sedan.

8. **Noise and Vibration** The **V8 engine** is loud, especially at highway speeds, and some owners report **excessive wind noise** or **road noise** due to the car s size and weight.

---

### **Ending Conclusion**

The **2017 Mercedes-Benz S63 AMG (109.512.90.17)** is an **exceptional luxury performance car** that delivers **unmatched power, comfort, and prestige**. However, the **radiator core issue** is a **major red flag** that could lead to **significant repair costs** if not addressed immediately. If the seller has **already replaced the radiator core** or provides **proof of recent cooling system maintenance**, the risk is mitigated but this is **not guaranteed**.

For a buyer who:

- **Prioritizes performance and luxury** over long-term cost concerns,

- **Has the budget for potential repairs** (especially cooling system and maintenance),

- **Plans to drive the car sparingly** (to reduce wear on the V8 and transmission),

- **Can find a reputable mechanic to inspect the vehicle thoroughly** (including coolant system, turbochargers, and transmission health),

then the S63 AMG remains an **excellent choice**.

However, if:

- **The radiator core has not been replaced** or the seller refuses to provide maintenance records,

- **You are not prepared for high maintenance costs** (oil changes, turbo work, suspension upgrades),

- **You prefer a more reliable, lower-maintenance luxury car** (e.g., a BMW M5, Audi S6, or even a newer S-Class with updated cooling systems),

then **this may not be the best purchase**.

---

### **Recommendation**

1. **Get a Professional Inspection** Before buying, have a **trusted Mercedes-Benz specialist or independent AMG mechanic** perform a **full diagnostic check**, focusing on:

- **Cooling system integrity** (radiator, hoses, thermostat, water pump)

- **Turbocharger and intercooler condition**

- **Transmission fluid health**

- **Exhaust manifold seals**

- **Electrical system (MBUX or earlier infotainment)**

2. **Verify Radiator Core Replacement** If the radiator core has **not been replaced**, **negotiate a lower price** or **walk away**. If it has been replaced, ask for **proof of the repair** (invoice, service records).

3. **Budget for Future Maintenance** Allocate **at least $3,000 $5,000 annually** for **oil changes, turbo maintenance, and potential cooling system issues**.

4. **Consider Alternatives** If the radiator issue is a dealbreaker, explore:

- **Newer S63 AMG models (2018 )** Some later models had **improved cooling system designs**.

- **BMW M5 (550i) or Audi S6** Similar luxury performance at a lower maintenance cost.

- **Used S63 with a known good cooling system** Look for **2018 models** or those with **radiator replacements documented**.

5. **Proceed with Caution** If you decide to buy, **drive conservatively** to **minimize engine stress**, and **keep up with AMG-specific maintenance**.

**Final Verdict:**

The **2017 S63 AMG is a fantastic car for the right buyer** one who values **performance over long-term reliability** and is **financially prepared for potential issues**. However, the **radiator core problem is a critical factor** that must be **properly addressed before purchase**. If the seller cannot confirm a **recent radiator replacement**, it is **not worth the risk** unless a **significant discount** is offered. For most buyers, **a newer model or a different luxury performance car** would be a **safer and more cost-effective choice**.

Details:

No expedited shipping is available. Donor Vehicle model: S63 Year: 2017 Mileage: 111000 not available or unknown Stock Number: BQ0053 Notes: ASSY,WITH REBAR WITH AND HORNS.

specifications ocoosys:

  • for models: S63, Amg
  • for makes: Mercedes
  • for years: 2017
  • part type: Radiator
  • conditions options: Assy, With Rebar
  • genuine oem: Yes
  • ipn: 109-51290
  • make: Mercedes-benz
  • descriptionpartcondition: With Rebar And Horns. If The Core Support Is A Cut, Contact Us Be
  • manufacturer warranty: Unspecified Length

returns ocoosys:

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

payments ocoosys:

  • wallet: Paypal
  • other
  • credit card: Visa

seller ocoosys:

  • # reviews: 54507
  • rating: 99.9%
  • city: Richland, Mississippi

general ocoosys:

  • condition: Used
  • Car Truck Parts Accessories > Engine Cooling Components > Radiators

offer ocoosys:

  • quantity: 1
  • best offers: True
  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • started: February 19, 2026

shipping ocoosys:

  • service: Flat Rate Freight
  • cost: $450.00
  • type: Fixed
  • class: Freight
for models: s63, amg, for makes: mercedes, for years: 2017, part type: radiator, conditions options: assy, with rebar, genuine oem: yes, descriptionpartcondition: with rebar and horns. if the core support is a cut, contact us be, manufacturer warranty: unspecified length,
manufacturer: mercedes-benz, category: auto parts > car truck parts accessories > engine cooling components > radiators, sku: 19879756552171861,
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1 offer $599.93 USD
  • Used. Offer #1 priced at $599.93 + $275.00 shipping estimate = $874.93* total. +$275.00 shipping

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