AC DELCO 94846TNXV Sonic Engine Cylinder Head

( Brand: Ac Delco ), ( Manufacturer Part Number: 94846TNXV ), ( Part Type: Engine Cylinder Head ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Engine Cylinder Head Assembly New; Without Cam Shafts And H. ), ( Years: 2012 2013 2014 2015 2016 2017 2018 2019 2020 ), ( Application: Chevrolet Sonic Engine Cylinder Head Assembly ), ( Product Name 2: Cylinder Head ), ( Cs-sku: 400 )

Review AC DELCO Chevrolet Sonic Engine Cylinder Head Assembly fits 2012–2020

The **AC Delco 94846TNXV** is a high-performance, direct-replacement **engine cylinder head** meticulously engineered to restore peak efficiency and reliability to the **2012 2020 Chevrolet Sonic** with its **1.8L or 2.0L Ecotec inline-four engine** (L41 or L42 series). Crafted from premium **cast iron** with precision-machined surfaces, this head is designed to deliver optimal airflow, combustion, and thermal management, ensuring consistent power delivery and longevity. The **94846TNXV** features a **four-valve-per-cylinder design** with **intake and exhaust ports** optimized for improved throttle response and fuel economy, reducing carbon buildup and maintaining smooth operation under high-stress conditions. Its **integrated valve cover** is sealed with a **high-temperature silicone gasket**, preventing leaks and ensuring a secure fit, while the **pushrod-guided valve train** minimizes wear and extends component life. Built to meet or exceed **OEM specifications**, this head is compatible with the **EcoTech fuel injection system**, supporting precise fuel delivery for cleaner combustion and reduced emissions. Whether replacing a worn or damaged head due to overheating, coolant leaks, or internal failure, the **AC Delco 94846TNXV** provides a **direct, drop-in solution** that restores factory performance without compromising on durability. Backed by **AC Delco s reputation for quality and compatibility**, this part is an ideal choice for mechanics and DIY enthusiasts seeking a **cost-effective, high-performance upgrade** that keeps the Sonic s engine running at its best.

The **AC Delco 94846TNXV** is a direct replacement for the **2012-2020 Chevrolet Sonic engine cylinder head** (1.8L or 2.0L Ecotec, depending on the year). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a AC Delco 94846TNXV Cylinder Head**

1. **OEM Quality and Fitment**

- AC Delco is a trusted brand under General Motors, meaning the part is designed to match the original equipment specifications of the Sonic s engine. This ensures proper fitment, sealing, and functionality without requiring extensive modifications.

2. **Reliability and Durability**

- As an OEM or OEM-equivalent part, the 94846TNXV is built to the same standards as the factory head. This reduces the risk of premature failure or compatibility issues that can occur with aftermarket parts that may not be engineered for the specific application.

3. **Warranty Coverage**

- AC Delco parts typically come with a manufacturer s warranty (often 1-2 years), providing peace of mind in case of defects. This is particularly valuable for cylinder heads, which are critical components and expensive to replace.

4. **Compatibility with Modern Engines**

- The 2012-2020 Sonic engines (1.8L and 2.0L Ecotec) share many design features, and the 94846TNXV is engineered to work seamlessly with both. This includes proper valve train alignment, gasket surfaces, and bolt patterns.

5. **Ease of Installation**

- Since it is a direct replacement, the part should install similarly to the original head. This means fewer adjustments are needed for components like the camshaft, rocker arms, or intake manifold, reducing labor time and potential for mistakes.

6. **Support for Emissions and Performance**

- The part is designed to meet emissions standards for the Sonic s model years, including OBD-II compliance. This ensures the engine will pass inspections and run efficiently without requiring additional modifications.

7. **Availability and Cost-Effectiveness**

- While not the cheapest option, the 94846TNXV is competitively priced compared to aftermarket alternatives. It avoids the risk of purchasing a low-quality part that may fail sooner, leading to additional repair costs.

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### **Cons of buying a AC Delco 94846TNXV Cylinder Head**

1. **Higher Upfront Cost**

- As an OEM or OEM-equivalent part, the 94846TNXV is more expensive than many aftermarket alternatives. For budget-conscious buyers, this may be a significant drawback, especially if the head is only being replaced due to minor issues (e.g., a cracked gasket or minor warping).

2. **Limited Customization**

- Unlike aftermarket heads, which may offer performance upgrades (e.g., larger valves, improved cooling, or forged internals), the AC Delco part is a stock replacement. If you re looking to modify the engine for better performance, you may need to source a different part.

3. **Potential for Counterfeit Parts**

- Purchasing from untrusted sellers (e.g., eBay, Craigslist, or unverified online marketplaces) increases the risk of receiving a counterfeit or refurbished part that doesn t meet AC Delco s standards. Always buy from authorized dealers or reputable suppliers.

4. **Weight and Size**

- The original cylinder head is lightweight and optimized for the Sonic s engine bay space. While the AC Delco part is designed to match, there is a slight possibility of minor weight differences or clearance issues if other components (e.g., intake manifold or exhaust headers) are not properly adjusted.

5. **Limited Long-Term Availability**

- While AC Delco parts are widely available for newer GM vehicles, there is a risk that the part may become harder to source in the future if GM discontinues production. However, this is unlikely for a part as common as this one.

6. **No Performance Benefits**

- If the original head is failing due to normal wear, replacing it with the AC Delco part will restore functionality but won t improve power, efficiency, or longevity beyond what the original was designed for.

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### **Conclusion**

The **AC Delco 94846TNXV cylinder head** is an excellent choice for anyone replacing a failed or damaged head in their **2012-2020 Chevrolet Sonic**. Its OEM quality ensures reliability, proper fitment, and compatibility with the engine s emissions and performance requirements. The part is backed by a warranty and reduces the risk of installation issues that can arise with aftermarket alternatives.

However, the higher cost may be a deterrent for those on a tight budget, and buyers should ensure they purchase from a trusted source to avoid counterfeit parts. If performance upgrades are a priority, an aftermarket head may be worth considering, but for most owners seeking a straightforward, reliable replacement, the AC Delco part is the safest and most practical option.

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### **Recommendation**

- You need a **direct, reliable replacement** for a failed or damaged head.

- You prioritize **OEM quality, warranty coverage, and ease of installation**.

- Your budget allows for the higher upfront cost, as it will save you from potential issues with cheaper alternatives.

- You want to **avoid emissions or performance-related problems** that could arise from non-OEM parts.

- You are looking to **modify the engine for better performance** (e.g., larger valves, upgraded cooling).

- You are on a **strict budget** and can find a high-quality aftermarket part (e.g., from brands like **Fel-Pro, Crane, or Forged**) that meets your needs.

- You are comfortable with **potential fitment or compatibility risks** that may come with non-OEM parts.

- Purchase from **authorized GM dealers, RockAuto, Summit Racing, or other reputable online retailers** to ensure authenticity and warranty coverage.

- Avoid buying from unverified sellers, as counterfeit parts can cause serious engine damage.

In most cases, the **AC Delco 94846TNXV is the best choice** for a Chevrolet Sonic cylinder head replacement, offering a balance of reliability, fitment, and peace of mind.

Details:

Some GM Genuine Parts may have formerly appeared as AcDelco Original Equipment OE. Parts Geek - For 2012 - 2020 Chevrolet Sonic Engine Cylinder Head Assembly AC Delco 94846TNXV: Review Fitment Notes to Ensure Proper Fit condition: Remanufactured Brand: Notes: New; Without CAM SHAFTS AND HYDRAULIC LASH ADJUSTERS Features: GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle. 2019 - 2020 Chevrolet Sonic Sedan 4dr. 2019 - 2020 Chevrolet Sonic Premier Hatchback 4dr.

GM regularly updates production and service part designs to integrate new materials technologies.

part #: 94846tnxv price

• $861.09

specifications cylinderheapar:

• for makes: Chevrolet
• for years: 2012-2020
• brand: Ac Delco
• mpn: 94846tnxv
• part type: Engine Cylinder Head
• manufacturer warranty: 12 Month Warranty
• notes: Engine Cylinder Head Assembly New; Without Cam Shafts And H.
• years: 2012 2013 2014 2015 2016 2017 2018 2019 2020
• application: Chevrolet Sonic Engine Cylinder Head Assembly
• product name 2: Cylinder Head
• cs-sku: 400

offer cylinderheapar:

• sold: 0
• quantity: 1
• options: Ship-to-home
• started: April 17, 2026
• availability: In Stock

returns cylinderheapar:

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

general cylinderheapar:

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

seller cylinderheapar:

• # reviews: 328816
• rating: 98.8%
• city: Atlanta, Georgia

payments cylinderheapar:

• credit card: Discover
• other
• wallet: Paypal

shipping cylinderheapar:

• cost: $0.00
• class: Standard
• carrier: FedEx
• transit: 4-10 Days
• service: FedEx Ground / FedEx Home Delivery
• type: Fixed

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