MAZDA 337-58415 Body Throttle Valve Manual

( Part Type: Valve Throttle Manual ), ( Conditions Options: No Turbo-mt ), ( Genuine Oem: Yes ), ( Ipn: 337-58415 ), ( Placement: Throttle Body Assembly )

Review MAZDA Body Throttle Valve Without Manual fits TURBO 626 1986–1987

The **Mazda 337-58415 Body Throttle Valve** is a precision-engineered component designed specifically for the **1986-1987 Mazda 626 (and related turbocharged models)**, serving as a critical part of the vehicle s intake system. This throttle valve, part of the **turbocharged 2.2L or 2.3L inline-four engine family**, plays a pivotal role in regulating airflow into the engine under varying driving conditions, particularly during turbocharged boost events. Crafted from durable materials, the valve is engineered to withstand the high pressures and temperatures associated with forced induction, ensuring smooth operation while minimizing wear. Its unique design incorporates a **spring-loaded mechanism** that allows for precise control of throttle response, helping to optimize power delivery and fuel efficiency. When installed, this valve integrates seamlessly with the **EFI (Electronic Fuel Injection) system**, working in tandem with the **turbocharger wastegate** and **intake manifold** to maintain proper airflow dynamics. Whether restoring a classic turbocharged Mazda 626 or upgrading an existing system, this throttle valve is an essential replacement part for those seeking reliable performance and longevity. Its compatibility with **manual transmission models** ensures it fits seamlessly into both street and light-duty performance applications, making it a must-have for enthusiasts aiming to preserve or enhance their vehicle s original character while maintaining peak mechanical integrity.

### Overview of the Mazda 337-58415 Body Throttle Valve (Turbo Manual, 1986-1987 626)

The **Mazda 626 (1986-1987)** with a **turbocharged manual transmission** is a classic Japanese sedan known for its reliability, driving dynamics, and cult following. The **337-58415 body throttle valve** is a critical component for the turbocharged models, controlling airflow into the engine for proper turbocharging and idle stability. Below is a detailed breakdown of the pros and cons of buying one of these cars, along with a conclusion and recommendation.

---

### **Pros of Buying a 1986-1987 Mazda 626 Turbo Manual**

1. **Strong Engine and Turbo Setup**

- The **2.2L or 2.3L turbocharged inline-4 engine** (depending on model year) produces **around 160-180 horsepower** in stock form, which was impressive for its time. The turbo setup is relatively simple and durable if maintained properly.

- The **manual transmission** (4-speed or 5-speed, depending on the year) is smooth and engaging, making it a fun car to drive, especially for enthusiasts who enjoy manual transmissions.

2. **Reliability (When Properly Maintained)**

- Mazda s turbocharged engines from this era are known for **lasting well over 200,000 miles** if the turbo, oil system, and cooling are regularly serviced.

- The **intercooler, wastegate, and turbocharger** (often a **Garrett T25 or similar**) are straightforward to repair or replace, making them more accessible than some modern turbo systems.

- The **fuel injection system** (Mazda s early EFI) is less complex than later electronic fuel injection setups, reducing long-term maintenance headaches.

3. **Driving Dynamics and Handling**

- The **626 s chassis** is well-balanced, with a **solid suspension setup** that provides a good mix of comfort and sportiness.

- The **turbo manual** models are particularly sought after for their **responsive throttle and engaging driving experience**, making them a favorite among classic turbo enthusiasts.

- The car handles **better than many contemporary sedans** of its time, with a **neutral steering feel** and decent cornering capabilities.

4. **Modding Potential**

- **Turbo upgrades** (larger turbos, upgraded intercoolers, high-flow exhaust).

- **Fuel system improvements** (upgraded injectors, larger fuel pump, high-flow fuel filter).

- **Engine management** (standalone ECU like **Megasquirt or Haltech** for better tuning).

- **Suspension and braking upgrades** (stiffer springs, sway bars, better brakes).

- The **aftermarket support** is strong, with parts and tuning communities dedicated to this platform.

5. **Affordability and Availability of Parts**

- Compared to some European or American muscle cars, the **626 is relatively inexpensive** to purchase and maintain.

- **Used parts** (turbochargers, sensors, injectors, etc.) are widely available, often at reasonable prices.

- **Complete rebuild kits** for the turbo system are also affordable, making major repairs feasible for DIYers.

6. **Classic Status and Community**

- The **turbo 626 has a dedicated fanbase**, with clubs, forums (e.g., **Turbo626.com, MazdaSpeed.com**), and events where owners share knowledge and modifications.

- The car has **cult appeal**, meaning it holds value better than many contemporaries and attracts enthusiasts who appreciate its unique blend of performance and practicality.

7. **Practicality for Daily Use**

- The **626 is a sedan**, meaning it offers **more practicality than a sports car** (e.g., rear seats, trunk space, comfort).

- It s **easier to drive in daily traffic** than a low-slung sports car, making it a good compromise between fun and functionality.

---

### **Cons of Buying a 1986-1987 Mazda 626 Turbo Manual**

1. **Turbocharger Reliability Issues**

- **Oil leaks** (turbo bearings, seals, or oil feed lines).

- **Wastegate failure** (leading to excessive boost or no boost).

- **Carbon buildup** in the intake and turbo housing over time.

- A **turbo rebuild or replacement** can cost **$800 $1,500**, which is a significant upfront expense.

- **Oil consumption** can be an issue if the turbo or piston rings wear out, leading to **oil leaks or excessive smoke**.

2. **Fuel System and EFI Problems**

- The **early EFI system** can develop **faulty sensors** (MAP, TPS, oxygen sensors) or **clogged injectors**, leading to **rough idling, stalling, or poor performance**.

- **Fuel pump failures** are common, and the **stock pump is weak** for high-performance builds.

- **Ethanol fuel** (common in modern gasoline) can **corrode fuel lines and damage rubber components** in the fuel system.

3. **Cooling System Weaknesses**

- **Overheating** if the turbo is modified or driven aggressively.

- **Thermostat failures** or **coolant leaks** (common in older Mazdas).

- A **larger radiator, upgraded water pump, and thermostat** are often necessary for reliable turbo operation.

4. **Transmission and Drivetrain Wear**

- The **manual transmission** (especially the **4-speed in 1986 models**) can develop **slippage, rough shifting, or synchro wear** over time.

- **Clutch failure** is a common issue, requiring a **clutch rebuild or replacement** ( $500 $1,000).

- **Differential and driveshaft wear** can occur if the car has been driven hard or neglected.

5. **Electrical and Sensor Issues**

- The **1986-1987 models have outdated electrical systems** with **faulty ground connections, corroded wiring, and unreliable sensors**.

- **Check engine lights (CEL)** are common due to **bad sensors or wiring issues**, which can be time-consuming to diagnose.

- **Alternator failures** are not uncommon, requiring replacement ( $300 $600).

6. **Interior and Comfort Wear**

- The **interior is basic by modern standards**, with **cheap plastics, stiff seats, and poor sound insulation**.

- **Rust** can be an issue in the **floor pans, rocker panels, and rear quarter panels**, especially in snowy or salted climates.

- **Heater and A/C systems** can fail, requiring **expensive repairs or replacements**.

7. **High Maintenance Requirements**

- **Oil changes every 3,000 5,000 miles** (synthetic oil recommended).

- **Turbo inspections and oil changes** (turbo oil is often recommended).

- **Fuel system cleaning** (every 20,000 30,000 miles to prevent injector clogging).

- **Cooling system flushes** to prevent corrosion.

- **Budgeting for repairs** is essential this is not a "set it and forget it" car.

8. **Driving Experience Limitations**

- While the **turbo manual is fun**, it is **not as fast or nimble as modern sports cars**.

- **Braking is adequate but not exceptional** (stock discs and drums wear out quickly with aggressive driving).

- **Tire wear** can be an issue due to the **stiff suspension and limited traction** compared to modern tires.

9. **Depreciation and Resale Value**

- The **626 is not a high-value car** like a Porsche or Mustang. While it has a **dedicated following**, resale value is **modest compared to its maintenance costs**.

- **Project cars** (those needing major work) can be **difficult to sell** unless you re in a strong local market for classics.

10. **Modern Driving Challenges**

- **Visibility is limited** compared to modern cars (smaller windows, higher seating position).

- **Fuel economy is poor** ( 12 15 MPG combined in stock form, worse with modifications).

- **Noise and vibration** can be an issue, especially with **worn suspension or exhaust components**.

---

### **Key Considerations Before Buying**

1. **Turbo Condition is Critical**

- **Inspect the turbo for leaks, oil consumption, and wastegate function.**

- **Check

Details:

Any metal components may have surface rust as this item is used and will appear such. Most carriers do not allow hand unloading. Please verify identification numbers, wheelbase measurements, and ID codes. A telephone number is required.

Shipping with an LTL carrier significantly reduces the risk of damage. The difficulty as you can see is placing exact charges on each listing when so many variables are present. Nearly all LTL carriers do not allow consignees to muscle a lightweight item the ground. Oversize charges are implemented for items over using the same formula and if its 130 an $180.00 charge is applied.

Common used part visual blemishes most likely present. As well charges are based on dimensional weight, not actual weight. Visual flaws still may be present as the item is used. Residential Limited Access fees range from $50-$100.

If an RMA# is not provided there may be a delay in processing the return. The reason for that is often the dimensions are too large to be accepted by a ground carrier. Specific item information and warranty is posted on the listing. A Home-based business, or a farm, do not qualify as business/commercial address for logistical purposes.

Lift gate Fees range from $50-$100. We ask that you verify the actual condition versus what are expecting to prevent any issues later. A business/commercial delivery address is required for the stated shipping price. Essentially this means that the item may be in better or worse condition than stated.

They are not reflective of the actual part or condition being sold. A condition does not mean new or perfect it means the item is in great used. Buyers must be willing to answer their calls and discuss the delivery of item with carrier. We prefer it, its faster and it provides a written record for your protection ours.

Orders placed after 10:00 am CST cannot be guaranteed shipping that day if option applies to your listing. That is not the way this system was designed. This system was designed as a benchmark with certain understandings. A lift gate fee is not contingent on the weight of item.

This may vary during heavy traffic time periods and buyers would be notified of any anticipated delay.

part #: 337-58415 price

• $56.00

specifications throobo:

• for models: Turbo, 626
• for makes: Mazda
• for years: 1986-1987
• part type: Valve Throttle Manual
• conditions options: No Turbo-mt
• genuine oem: Yes
• ipn: 337-58415
• placement: Throttle Body Assembly

shipping throobo:

• transit: 3-7 Days
• cost: $0.00
• type: Fixed
• class: Standard
• service: Standard

offer throobo:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• sold: 0
• best offers: True
• started: June 9, 2026

general throobo:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Throttle Bodies

seller throobo:

• rating: 99.9%
• city: Arena, Wisconsin
• # reviews: 10326

payments throobo:

• wallet: Paypal
• other
• credit card: Visa

returns throobo:

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

Mazda Is Similar To:

• 05-40000 Flyin Miata Mazda Throttle Body Adapter (31.9% similar) Includes all necessary fasteners. Read below for the flying Marta. 8 engine into a see pictures for best. This adaptor will allow the throttle body to bolt up either a or manifold. Comes with the original bolts included. Two holes need to be drilled and tapped in your manifold then this adaptor ...(July 4th, 2018)
• 14497295 Perfect Fit New Throttle Position Sensor Mazda Miata 723650504734 (40% similar) Please for any questions. Look no further. This replacement throttle position sensor is 100% factory-tested. All replacement brand items are backed by 1-YEAR, unlimited-mileage warranty. Brand new in the box - fit and quality guaranteed. Each warranty gives you specific rights, and may have other ...(November 10th, 2018)
• 18-9101 Denso Mazda Miata Throttle Position Sensor Tps Manual (42.4% similar) 6 Marta manual throttle position sensor...(October 25th, 2018)
• 195900-3481 Factory Original Oe Oem Unknown Mazda Throttle Body (23.9% similar) If by chance a mistake is made please prior...(June 2nd, 2018)
• 2 131743749lkq Mazda Throttle Body Assembly Miles Oem (37.1% similar) No photos of the actual item are available...(March 18th, 2018)
• 2 154139227lkq Mazda 11-14 Throttle (30.2% similar) No photos of the actual item are available...(October 4th, 2017)
• 3 Lkq 104081418 Mazda 2012-2015 3 2.0l Throttle (31.7% similar) Vain 7 or 8, 8TH digit mazda CZ throttle valve Assam. This will fit: mazda throttle valve Assam throttle body assembly 9k oem this online listing is in good, used, working condition...(January 4th, 2017)
• 3 Lkq 126691772 Mazda 2006-2013 3 Throttle Body (33.3% similar) No photos of the actual item are available...(February 21st, 2017)
• 3 113034847lkq Mazda Throttle Body Assembly Oem Lkq (32.8% similar) ...(March 20th, 2018)
• 3 126691772lkq Mazda 2006-2013 Throttle (30.9% similar) Turbo mazda throttle valve Assam 3l excl. This will fit: mazda throttle valve Assam 3L, excl...(November 19th, 2017)
• 3 130722159lkq Mazda Throttle Body Valve Oem (36.5% similar) No photos of the actual item are available. Vain 7 or 8, 8TH digit mazda CZ throttle valve Assam...(February 26th, 2018)