1. Exterior Auto For Sale
  2. sku: 4919205679180773
  3. GM 20496893

GM 20496893 Nos Right Top Latch Box General

fits model: Camaro, Firebird. year: 1983–1991.

20496893 General Motors Nos 1983 1991 Camaro Gm Right T Top Latch Assembly In Org Box Firebird

( Brand: Gm ), ( Manufacturer Part Number: 20496893 ), ( Items Included: Mounting Hardware ), ( Material: Steel ), ( Vintage Part: Yes ), ( Placement On Vehicle: Right Side ), ( California Prop 65 Warning: Most Likely ), ( Type: T-top ), ( Features: Original Equipment ), ( Universal Fitment: No ), ( Country Of Origin: United States )

Review GM General Motors Nos Right Top Latch Assembly In Org Box fits CAMARO FIREBIRD 1983–1991

This rare and highly sought-after **1983 1991 Chevrolet Camaro and Pontiac Firebird Right Top Latch Box Assembly** (GM Part Number **20496893**) represents a critical, often overlooked component of the iconic Trans Am and Firebird platforms from the early 1980s. Designed to secure the right-hand side rear quarter panel latch mechanism, this box houses the latch actuator, retaining clips, and mounting hardware essential for proper door operation, ensuring a tight, weatherproof seal between the panel and body. Crafted from durable die-cast zinc alloy or high-strength steel (depending on the model year and application), the latch box features precision-machined mounting tabs and a reinforced housing to withstand the rigors of daily driving, from aggressive lane changes to high-speed maneuvers. Its design is integral to the vehicle s structural integrity, particularly in the rear quarter panel area, where it interfaces with the door hinge and outer panel, preventing rattles, drafts, and potential water intrusion a common issue in older GM muscle cars prone to corrosion and wear.

The **20496893** latch box is particularly notable for its compatibility across multiple generations of the **Z28, IROC-Z, Trans Am, and Firebird Formula**, spanning the **1983 1991 model years**, which encompassed significant design shifts, including the introduction of the **T-tops, convertible tops, and revised body panels** in later iterations. Early models (1983 1986) often featured a slightly different casting profile to accommodate the **L98 V8 engine bay expansion**, while later iterations (1987 1991) incorporated refinements to the latch mechanism to improve durability and ease of service. The component s universal fitment across these models underscores its importance in both restoration and maintenance projects, as original parts are increasingly difficult to source due to discontinued manufacturing and the passage of time. For enthusiasts and mechanics, this latch box is not merely a functional replacement but a nod to the engineering precision of GM s high-performance divisions during an era when American muscle cars were evolving from their classic roots into modern performance machines.

Beyond its mechanical function, the **20496893** latch box carries historical significance as part of a lineage of parts that defined the **Camaro and Firebird s** identity as symbols of American automotive innovation. Its inclusion in the vehicle s assembly ensures that the iconic **swept-back fenders, aggressive stance, and signature rear quarter panel contours** remain intact, preserving the car s aesthetic and structural integrity. For collectors and restorers, sourcing an authentic GM latch box especially one in original condition adds tangible value to a project, as aftermarket replicas often lack the exact tolerances and build quality of the original. Whether used in a **fully restored 1985 Trans Am with a T-top**, a **stripped-down IROC-Z**, or a **daily-driven Firebird Formula**, this component bridges the gap between form and function, ensuring that the car s legendary performance is matched by its reliability and timeless appeal.

### **Pros and Cons of Buying a 1983 1991 Chevrolet Camaro (GM Right Top Latch Box, Firebird Compatible)**

#### **Pros**

1. **Classic Muscle Car Appeal** The 1983 1991 Camaro represents a transitional era between the body-on-frame designs of the 1970s and the unibody models of the 1990s. Early models (1982 1985) still carried over some 1970s styling cues, while later versions (1986 1991) introduced a more modern, aerodynamic look. The **right-top latch box** (a GM-specific feature for trunk/lid release mechanisms) is common in these years, making it easier to find compatible parts.

2. **Strong Engine Options** Depending on the model year, these Camaros offered a variety of engines:

- **1982 1985:** 2.5L (4-cylinder), 3.8L V6, and 5.0L V8 (LT1 in 1982 1985, then LT4 in 1986 1991).

- **1986 1991:** The **LT4 5.0L V8** (with improved fuel injection and power) became standard in higher trims, offering ** 200 220 hp** respectable for the era.

- **1991:** The **Z28** returned with a **305 hp** LT1 V8 (though only in limited numbers).

The **5.0L V8** is one of the most reliable and tunable engines from this era, making it a great choice for enthusiasts.

3. **Durability and Simplicity** Compared to later unibody Camaros, these models have a **body-on-frame construction**, which is generally more forgiving in collisions and easier to repair. The **mechanical simplicity** of the early V8s (especially the LT1/LT4) means fewer electronic failures than later models.

4. **Aftermarket Support** These years are well-supported by the aftermarket:

- **Performance parts** (e.g., Holley carburetors, Edelbrock manifolds, Borla headers) are readily available.

- **Restoration parts** (including the **right-top latch box** for the trunk lid) can be sourced from GM dealers, junkyards, or specialty suppliers.

- **Tuning potential** is excellent, with options ranging from simple carburetor upgrades to full electronic fuel injection (EFI) conversions.

5. **Driving Experience** The **1986 1991 models** (especially the Z28) offer a **more refined ride** than their predecessors, with improved suspension tuning and better handling. The **1991 Z28** is particularly sought after for its **4-speed automatic (4L60) or 5-speed manual** and **4-wheel disc brakes**.

6. **Lower Cost of Ownership (Compared to Later Models)** While parts can be expensive, **labor costs are often lower** than on modern muscle cars. The **simpler drivetrain** (pre-CAT, pre-computerized fuel injection in most cases) means fewer long-term reliability concerns.

7. **Firebird Compatibility** Since the Camaro and Firebird shared platforms, **parts are interchangeable**, making repairs and modifications easier. The **right-top latch box** (used in both models) ensures that trunk lid mechanisms are compatible.

---

#### **Cons**

1. **Rust Issues** Many **1983 1991 Camaros** (especially those from the **1980s**) suffer from **frame and floorpan rust**, particularly in snowy or coastal climates. A **thorough inspection** of the **frame rails, subframe, and wheel wells** is essential before purchase.

2. **Electrical Reliability** Later models (especially **1986 1991**) introduced **more electronics**, including **fuel injection (EFI) and computer-controlled ignition**. While the **1982 1985 models** used **carburetors**, which are simpler, the **1986 EFI systems** can be finicky and may require **updates or replacements** over time.

3. **Transmission Problems** The **4-speed automatic (4L60)** in later models can develop **slippage or solenoid failures**, while the **5-speed manual** (introduced in 1986) is generally reliable but may require **synchronizer replacements** if abused.

4. **Suspension Wear** The **shock absorbers, bushings, and control arms** in these cars can wear out over time, leading to **poor handling and a rough ride**. Replacing them is often a **necessary maintenance task**.

5. **Interior Wear** The **vinyl and carpet** in older Camaros degrade quickly, and **seat springs** can break. While not a major mechanical issue, a **full interior refresh** can be costly.

6. **Fuel System Concerns** The **carbureted models (1982 1985)** can suffer from **vacuum leaks, dirty air filters, and carburetor fouling**, while the **EFI models (1986 )** may have **fuel pump or sensor failures** over time.

7. **Emissions Compliance** If you plan to **drive the car daily**, you may need to **update emissions systems** (e.g., **EGR, O2 sensors, PCV**) to meet modern standards, which can add to maintenance costs.

8. **Limited Modern Tech** Unlike newer muscle cars, these models lack **modern safety features** (airbags, ABS, traction control) and **infotainment systems**, which may be a drawback for some buyers.

9. **Parts Availability Can Be Hit-or-Miss** While common, **some rare parts** (e.g., **specific latch mechanisms, interior trim**) may require **specialty suppliers** or **restoration shops**.

10. **Potential Overhaul Costs** If the car is **heavily rusted or neglected**, a **full restoration** (frame replacement, new body panels, interior) can cost **$10,000 $30,000 **, depending on condition.

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### **Conclusion**

The **1983 1991 Chevrolet Camaro** (especially the **LT4 5.0L V8 and Z28 models**) is a **great choice for enthusiasts** who appreciate **classic muscle car driving, strong engine options, and aftermarket support**. The **right-top latch box** (shared with the Firebird) ensures compatibility with a wide range of parts, making repairs and modifications easier.

However, **rust, electrical issues, and suspension wear** are common concerns, particularly in older examples. **Buyers should prioritize a thorough inspection** of the **frame, drivetrain, and electrical system** before purchasing. If maintained properly, these cars can be **reliable, fun, and endlessly modifiable** making them a **strong investment for the right owner**.

---

### **Recommendation**

- **Best for:** Enthusiasts who want a **drivable, modifiable muscle car** with **strong engine options** and **aftermarket support**.

- **Avoid if:** You want a **low-maintenance, daily driver** with **modern safety and tech features**.

- **Ideal Purchase Considerations:**

- **Look for a well-documented car** with **service records** (especially for **transmission, suspension, and rust checks**).

- **Prefer a 1986 1991 model** (LT4 or Z28) for **better reliability and handling**.

- **Budget for potential repairs** (rust repairs, suspension refresh, electrical updates).

- **Consider a project car** if you re comfortable with **restoration work**, but **expect higher costs** if the car is severely rusted.

- **Test drive thoroughly** check for **transmission smoothness, suspension firmness, and electrical reliability**.

**Final Verdict:** If you re **passionate about classic muscle cars and willing to invest time and money in maintenance**, a **1983 1991 Camaro (especially a Z28 or LT4)** is an **excellent purchase**. However, **expect some challenges** and **plan for repairs** but the **driving experience and mod potential** make it well worth it for the right owner.

Details:

They are a large part of the. I am not an expert so may be wrong. According to the 1992 Chevy parts book, it would be correct for 1983 thru 1991 Camaro. See 23 photos.

I will send other pics if requested. The box has water damage and is in poor condition. I do combine shipping when possible.

Keep your eyes open for more NOS parts. It would be perfect for a driver, survivor, or restoration project. Look the pictures over good and ask questions. It is in very good condition.

NOS GM #20496893 right side top latch in its original box. I ship US mail or FedEx, whichever is less. I recently purchased a large lot of NOS GM parts. Please zoom in on all 23 photos to get a better look at what you are buying.

I assume it would also be correct for Firebird model's as well. It does show minor imperfections. I describe items to the best of my ability. It may be correct for or fit other years and GM model's.

part #: 20496893 price

  • $99.99

specifications sunrooconvertib:

  • for models: Camaro, Firebird
  • for years: 1983-1991
  • brand: Gm
  • mpn: 20496893
  • items included: Mounting Hardware
  • material: Steel
  • vintage part: Yes
  • placement on vehicle: Right Side
  • california prop 65 warning: Most Likely
  • type: T-top
  • features: Original Equipment
  • universal fitment: No
  • country of origin: United States

payments sunrooconvertib:

  • wallet: Google-pay
  • credit card: Discover
  • other

shipping sunrooconvertib:

  • service: USPS Ground Advantage, FedEx Ground Economy, USPS Priority Mail
  • class: Standard, Economy, Expedited
  • carrier: USPS, FedEx
  • cost: $22.65
  • type: Calculated
  • transit: 4-8 Days

general sunrooconvertib:

  • condition: Used
  • Exterior Parts Accessories > Roofs, Tops Sunroofs > Hardtops, Roof Panels Parts

offer sunrooconvertib:

  • availability: In Stock
  • sold: 0
  • quantity: 1
  • started: April 2, 2026
  • options: Ship-to-home

returns sunrooconvertib:

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

seller sunrooconvertib:

  • # reviews: 10143
  • rating: 100.0%
  • city: Voorheesville, New York
for models: camaro, firebird, for years: 1983-1991, items included: mounting hardware, vintage part: yes, placement on vehicle: right side, california prop 65 warning: most likely, type: t-top, features: original equipment, universal fitment: no, country of origin: united states,
category: auto parts > exterior parts accessories > roofs, tops sunroofs > hardtops, roof panels parts, material: steel, sku: 4919205679180773,
Gm 20496893 Is Similar To:
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1 offer $99.99 USD
  • Used. Offer #1 priced at $99.99 + $24.10 shipping estimate = $124.09* total. It would be perfect for a driver, a survivor, or a restoration project. NOS GM # right side T top latch in it's original box.+$24.10 shipping

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