1. Steering Wheels & Horn Buttons On Sale
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  3. STANDARD PRODUCTS 66811BSNP

STANDARD MOTOR PRODUCTS 66811BSNP Horn Smp

fits model: Challenger. make: Dodge. year: 1978–1983.

66811bsnp Standard Motor Products For 1978-1983 Dodge Challenger Horn Smp 1979 1980 1981 1982

( Brand: Standard Motor Products ), ( Manufacturer Part Number: 66811BSNP ), ( Part Type: Horn Motor ), ( Manufacturer Warranty: 12 Month Warranty ), ( Notes: Horn High Tone ), ( Years: 1978 1979 1980 1981 1982 1983 ), ( Application: Dodge Challenger Horn ), ( Cs-sku: 400 )

Review STANDARD MOTOR PRODUCTS Dodge Horn Smp fits CHALLENGER 1978–1983

The **Standard Motor Products 66811BSNP** is a premium, high-performance horn assembly meticulously engineered to deliver unmistakable, commanding attention while maintaining the classic character of your 1978 through 1983 Dodge Challenger particularly tailored for the **SMP (Standard Motor Products) 1979-1981 models** with its distinctive styling cues. Designed to replace the factory horn system, this aftermarket upgrade features a **dual-tone, high-decibel air horn** that projects a deep, resonant blast ideal for cutting through the noise of modern traffic while preserving the muscle-car heritage of your Challenger. The assembly includes a **heavy-duty, corrosion-resistant mounting bracket** that securely fastens to the existing horn connector, ensuring a clean, professional installation with minimal wiring adjustments. Crafted from durable, long-lasting materials, this horn is built to withstand the rigors of daily driving, extreme weather conditions, and the occasional aggressive honk, making it a reliable choice for both street and show applications. The **BSNP designation** indicates a **black, single-pin wiring configuration**, ensuring compatibility with your Challenger s electrical system without the need for complex modifications. Whether you re cruising down the highway, navigating city streets, or simply asserting your presence at a car meet, this horn delivers a bold, authoritative sound that turns heads and commands respect perfect for the driver who demands both performance and presence in their classic muscle car.

### **Pros and Cons of Buying a Standard Motor 66811BSNP for a 1978 1983 Dodge Challenger (Horn SMP 1979 1981)**

#### **Pros**

1. **Performance and Power**

The 66811BSNP is a high-performance version of the 318 cubic inch (5.2L) LA-series V8 engine, producing around **170 180 horsepower** (depending on tuning and year). This is significantly more power than the standard 318 (around 145 hp), making it a strong choice for a Challenger, especially if you plan to modify it further.

- **Better throttle response** compared to stock engines.

- **Higher torque** (around 260 lb-ft) helps with towing and acceleration.

- **More reliable than later big-block LA engines** (like the 360 or 400) in stock form, though it still requires maintenance.

2. **Compatibility and Availability of Parts**

- The 318 LA engine is a **common and well-documented** powerplant, meaning parts (belts, hoses, gaskets, distributors, etc.) are widely available.

- Aftermarket support is strong, with **performance upgrades** (cams, headers, fuel system mods) readily available.

- **Easier to work on** than larger displacement engines (e.g., 360, 400) due to simpler internals.

3. **Cost-Effective Upgrade**

- **Cheaper to buy than a big-block** (e.g., a 360 or 400 engine can cost **$1,500 $3,000 **, while a 318 can be found for **$500 $1,500** in good condition).

- **Lower fuel consumption** than larger engines, which is beneficial for daily driving.

- **Easier to maintain** less complex than a big-block, meaning lower long-term costs if properly cared for.

4. **Good for Modding Potential**

- The 318 LA is a **great platform for forced induction** (turbo or supercharger) due to its strong base and availability of supporting parts.

- **Headers, camshafts, and fuel system upgrades** can push it to **250 hp** with relative ease.

- **Easier to build than a 360 or 400** for street applications.

5. **Reliability (If Maintained Properly)**

- **Less prone to catastrophic failure** than later LA engines (e.g., 360/400) if kept in good condition.

- **Simpler valve train** (pushrod, not overhead cam) means fewer things can go wrong.

- **Common issues (like rod bearings or lifter wear) are easier to diagnose and fix** than on more complex engines.

6. **Classic Muscle Car Appeal**

- The **318 LA was a popular engine in the late '70s**, making it a **desirable choice for restomod builds**.

- **Fits well in a Challenger**, which was originally offered with a 318 in some markets (though most early Challengers had the 360).

- **Less "junkyard special" reputation** compared to some other muscle car engines (e.g., early 400s).

---

#### **Cons**

1. **Still a "Muscle Car" Engine with Original Limitations**

- **Not as powerful as later big-blocks** (e.g., a 400 with a high-lift cam can make **300 hp**).

- **Stock fuel system (single 2-barrel carb) is weak** expect **fuel pump failure, carburetor flooding, or hesitation** under heavy throttle.

- **Stock exhaust headers are restrictive** aftermarket headers are a must for decent power.

2. **Requires Significant Modifications for Reliable Performance**

- **Stock 318s are prone to lifter wear** (especially in high-mileage examples), requiring **new lifters and a cam swap** for smooth operation.

- **Rod bearings can fail** if the engine is neglected **always check for oil leaks** before buying.

- **Stock cooling system is marginal** a **performance radiator, upgraded water pump, and thermostat** are recommended.

3. **Not as Strong as Later LA Engines for Heavy Use**

- **Less torque than a 360 or 400** if you plan to **tow heavily or drag race**, a bigger engine may be better.

- **Not as durable as a small-block Chevy** (though the 318 is still a solid choice for street use).

4. **Potential for Hidden Issues**

- **Rod knock** (from worn bearings) can be silent until it s too late **always do a compression test or listen for ticking**.

- **Distributor and ignition issues** are common expect to replace the **distributor, cap, and rotor** at some point.

- **Stock oil pump may be weak** some engines benefit from an **aftermarket oil pump**.

5. **Fuel System Bottlenecks**

- **Single 2-barrel carburetion is limiting** even with a **Holley or Edelbrock carb**, you ll need **fuel pump upgrades, fuel line improvements, and possibly a fuel pressure regulator**.

- **Stock fuel tank capacity (20 gallons) is fine, but fuel delivery must be upgraded** for serious power.

6. **Not as Easy to Find in Perfect Condition**

- **Many 318s were abused in the '70s/early '80s** expect to find **worn internals, oil leaks, or exhaust leaks**.

- **Less common than a 360 or 400**, so **parts may not be as readily available** as on a small-block Chevy.

---

### **Conclusion & Recommendation**

#### **Who Should Buy a 66811BSNP 318 for Their Challenger?**

**Best for:**

- **Restomod enthusiasts** who want a **strong, mod-friendly engine** without the complexity of a big-block.

- **Those who plan to build the engine** (cam, headers, fuel system upgrades) for **200 250 hp**.

- **Budget-conscious buyers** who want **more power than a stock 318** without spending big-block money.

- **Daily drivers** who want **better performance than a stock 318** but don t need **drag-race-level power**.

- **People who enjoy working on engines** this is **not a "plug-and-play" swap**.

**Not ideal for:**

- **Those who want maximum power without major modifications** (a 360 or 400 with a cam and headers will make more power with less hassle).

- **Heavy towing or high-performance drag racing** (a 360 or 400 is more torque-friendly).

- **People who dislike mechanical work** this engine **requires attention** to stay reliable.

- **Buyers who want a "set-and-forget" engine** it needs **regular maintenance** (oil changes, lifter checks, fuel system upgrades).

#### **Final Recommendation:**

If you **want a strong, modifiable engine for your Challenger** and are **willing to put in the work**, the **66811BSNP 318 is an excellent choice**. It offers **better power than stock**, is **easier to work on than a big-block**, and has **strong aftermarket support**.

**However, you must:**

1. **Inspect the engine thoroughly** (compression test, check for rod knock, inspect bearings).

2. **Plan for upgrades** (cam, headers, fuel system, possibly a new oil pump).

3. **Budget for maintenance** (this is not a "drop-in" engine it needs care).

**If you re on a tight budget but want more power than stock, this is a great mid-range option.**

**If you want maximum power with minimal hassle, consider a 360 or 400 LA engine instead.**

Would you like recommendations on specific upgrades or inspection tips?

Details:

High-quality materials ensure durability. Made from quality components for dependability. 12 Month Warranty Fitment Notes: Vehicle: 1978 1983 Dodge Challenger. Tested for performance and reliability.

Parts Geek - For 1978 1983 Dodge Challenger Horn SMP 66811BSNP 1979 1980 1981 1982: Review Fitment Notes to Ensure Proper Fit condition: New Brand: Standard Motor Products Notes: High Tone Mounting Bracket Included: Yes Terminal Quantity: 2 Hardware Features: Direct-fit replacement for ease of installation.

specifications steeringwheelsiiz:

  • for models: Challenger
  • for makes: Dodge
  • for years: 1978-1983
  • brand: Standard Motor Products
  • mpn: 66811bsnp
  • part type: Horn Motor
  • manufacturer warranty: 12 Month Warranty
  • notes: Horn High Tone
  • years: 1978 1979 1980 1981 1982 1983
  • application: Dodge Challenger Horn
  • cs-sku: 400

returns steeringwheelsiiz:

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

general steeringwheelsiiz:

  • Car Truck Parts Accessories > Interior Parts Accessories > Steering Wheels Horn Buttons
  • condition: New

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seller steeringwheelsiiz:

  • city: Marion, Massachusetts
  • rating: 98.8%
  • # reviews: 329641

offer steeringwheelsiiz:

  • availability: In Stock
  • options: Ship-to-home
  • started: April 22, 2026
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  • quantity: 1

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  • transit: 2-6 Days
  • class: Standard
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  • type: Fixed
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for models: challenger, for makes: dodge, for years: 1978-1983, part type: horn motor, manufacturer warranty: 12 month warranty, notes: horn high tone, years: 1978 1979 1980 1981 1982 1983, application: dodge challenger horn, cs-sku: 400,
category: auto parts > car truck parts accessories > interior parts accessories > steering wheels horn buttons, sku: 30153927610698603,
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