Baywindow Bus Type 4 Heat Exchanger Bundle Kit - 1972-78 (Copper Ring Gasket Model)

This pair of heat exchanger elbows is designed to fit all Volkswagen Baywindow Campervans from 1972 to 1979 equipped with 1700cc, 1800cc, or 2000cc Type 4 “pancake-style” engines, as well as VW Type 25 (T3) Buses from 1980 to 1983 with 2000cc aircooled engines. These robust metal elbows form a critical link in the heating system, channeling warm air from the engine-mounted heat exchangers through to the vehicle`s main heater pipes located on the chassis.

Made from durable materials and finished to a good quality standard, these elbows ensure reliable airflow and help maintain proper cabin heating in colder conditions. The precise bends and correct sizing ensure a snug, secure fit with the surrounding components.

Important Fitment Note: These elbows are not compatible with US-spec heat exchangers, which differ in outlet design. These are intended for use with European and non-US heat exchanger setups only.

Installation Tip: These elbows locate between the heat exchangers and the heater control flaps or chassis pipes. It’s recommended to inspect and, if necessary, replace any perished rubber seals or clamps for a tight, leak-free fit. These are usually reused but replacements are available if needed.

Applications:

• VW Baywindow Type 2 (Bus/Camper): 1972–1979 with Type 4 engine

• VW Type 25 / T3 (Aircooled): 1980–1983 with 2000cc aircooled engine

This exhaust silencer to heat exchanger gasket is designed for all Baywindow Buses equipped with 1700cc, 1800cc, or 2000cc Type 4 “suitcase” engines. It creates a reliable seal between the silencer (muffler) and the heat exchanger, helping to prevent exhaust leaks and maintain proper engine backpressure.

The gasket is also used on:

• VW Type 25 (T3) Buses with 2000cc Aircooled engines

• VW Type 25 (T3) with 1900cc Waterboxer engines (up to 1985)

• Porsche 914 models with Type 4 engines

Manufactured from durable, heat-resistant material, this gasket withstands the high temperatures and pressures of the exhaust system. Two are required per engine, one for each side.

Fitment Summary:

• VW Baywindow Bus (1700cc, 1800cc, 2000cc Type 4 engines): 1972–1979

• VW T25 / Type 25 (2000cc Aircooled + 1900cc Waterboxer): up to 1985

• Porsche 914: 1970–1976 (1.7–2.0 Type 4 engines)

Quantity: Sold individually
Required per engine: 2

This oval copper exhaust sealing ring is used on all Type 4 aircooled engines in 1700cc, 1800cc and 2000cc capacities fitted to VW Baywindow Buses from 1972 to 1978. Its purpose is to seal the joint between the heat exchanger and the cylinder head, ensuring a gas-tight connection in one of the hottest and most critical areas of the engine.

The gasket sits between the heat exchanger outlet and the exhaust port in the cylinder head. When tightened, the soft copper material compresses evenly, creating a secure seal that prevents exhaust leaks, loss of back pressure, and hot gases escaping into the engine bay or heating system. A correctly sealed joint is essential for proper exhaust flow, efficient engine performance, and safe cabin heating.

Copper is used because of its excellent heat resistance and malleability. This allows the gasket to withstand the extreme temperatures and pressure cycles typical of air-cooled engines while still conforming to minor surface imperfections in the mating faces. Over time, original sealing rings can become crushed, hardened, or damaged during removal, making replacement essential whenever heat exchangers are removed or refitted.

This gasket is manufactured to the correct oval profile for early Type 4 engines, ensuring precise fitment and reliable sealing when used with compatible heat exchangers.

Fitting & Quantity Information

• Seals heat exchanger to cylinder head

• 2 gaskets required per heat exchanger

• 4 gaskets required per engine

• Recommended to replace whenever exhaust components are removed

Quality

• Durable copper construction

• Designed for reliable sealing under high heat conditions

Applications

• VW Baywindow Van: 1972 – 1978

  • Type 4 engines: 1700cc, 1800cc, 2000cc

• Porsche 914: 1970 – 1973 (Type 4 engines)

Introducing the Replacement Left Hand Side Heat Exchanger for VW Baywindow Buses equipped with 1700cc to 2000cc Type 4 engines, manufactured from 1972 to 1978. This high-quality heat exchanger is designed to restore proper heating and exhaust function in your classic VW, providing a reliable replacement for worn or damaged original units. The heat exchanger plays a vital role in the vehicle’s heating system, using exhaust heat to warm the cabin while ensuring efficient exhaust flow.

Key Features:

• Wide Compatibility: Specifically engineered for:
  • VW Baywindow Buses with 1700cc to 2000cc Type 4 engines, produced from 1972 to 1978.
• Copper Ring Gasket Seals: This heat exchanger uses copper rings as gaskets to seal the connection to the cylinder head, ensuring a secure and leak-free fit. The copper rings provide durability and effective sealing, maintaining the integrity of the exhaust and heating system.
• Good Quality Reproduction: Manufactured to high standards, this heat exchanger closely matches the original part in terms of fit, function, and appearance, providing reliable heating and exhaust performance.
• Direct Fit Replacement: Designed as a direct replacement for the original left-hand side heat exchanger, this unit ensures an easy installation and a perfect fit, restoring the heating and exhaust functions of your VW Baywindow.
• Bundle Kit Option Available: For a complete installation, consider the full heat exchanger bundle kit with fittings (part number 02125609KIT), which includes all necessary gaskets and hardware.

Fitting Requirements:

To ensure a proper fit and seal, the following gaskets and fittings are required for installation:

• 2 x Copper Ring Gaskets: Part number 021256251A – used to seal the connection between the heat exchanger and the cylinder head.
• 2 x Gaskets for Exhaust: Part number 021251261 – used to seal the exhaust connection.

Why the Heat Exchanger is Essential:

The heat exchanger is an integral component of the heating and exhaust systems in classic VW Baywindow Buses. It utilizes the heat from the exhaust gases to warm the interior cabin while directing the exhaust flow through the system. Over time, heat exchangers can corrode, leak, or become damaged, leading to poor heating performance, exhaust leaks, and reduced engine efficiency. Replacing a faulty heat exchanger with this high-quality reproduction ensures that your vehicle’s heating system operates efficiently and that exhaust gases are properly managed.

Compatibility:

• VW Baywindow Buses with 1700cc to 2000cc Type 4 engines, manufactured from 1972 to 1978.

This left-hand side heat exchanger is specifically designed to fit these models, ensuring a direct replacement and reliable operation.

Why Choose This Replacement Left Hand Side Heat Exchanger?

1. Restores Heating and Exhaust Function: This replacement heat exchanger ensures that your Baywindow’s cabin heating system operates efficiently and that exhaust gases are properly directed through the system.

2. Good Quality Reproduction: Made to high-quality standards, this heat exchanger closely matches the original part’s specifications, providing reliable performance and durability.

3. Uses Copper Ring Gaskets for Secure Sealing: The use of copper ring gaskets ensures a durable and leak-free seal at the cylinder head, preventing exhaust leaks and maintaining heating efficiency.

4. Direct Fit for Classic VW Models: Specifically designed for VW Baywindow Buses from 1972 to 1978, this heat exchanger offers a straightforward installation and perfect fit.

5. Available Bundle Kit Option: For a complete installation, the full heat exchanger bundle kit (part number 02125609KIT) includes all necessary gaskets and fittings, making it easy to replace the entire heat exchanger setup.

Key Specifications:

• Fitment: For VW Baywindow Buses with 1700cc to 2000cc Type 4 engines from 1972 to 1978.
• Quality: Good quality reproduction ensures reliable performance.
• Seal Type: Uses copper rings as gaskets where the heat exchanger seals to the cylinder head.
• Fitting Requirements: Requires 2 copper ring gaskets (part number 021256251A) and 2 exhaust gaskets (part number 021251261).

Benefits of Replacing a Worn Heat Exchanger:

• Improved Cabin Heating: A new heat exchanger restores proper heating to the interior of your Baywindow, making driving more comfortable, especially in colder weather.
• Prevents Exhaust Leaks: By ensuring a secure and leak-free seal at the cylinder head and exhaust connections, this heat exchanger helps to prevent dangerous exhaust leaks.
• Maintains Engine Efficiency: Proper exhaust flow is essential for optimal engine performance. Replacing a corroded or damaged heat exchanger helps maintain engine efficiency and performance.
• Cost-Effective Restoration: This replacement heat exchanger offers a reliable and affordable solution for restoring the heating and exhaust systems on your classic VW.

Easy Installation:

This Replacement Left Hand Side Heat Exchanger is designed for easy installation, making it suitable for both professional mechanics and DIY enthusiasts. As a direct fit for VW Baywindow Buses (1972-1978), installation is straightforward, restoring the heating and exhaust functions to factory specifications.

Restore Your Baywindow’s Heating and Exhaust System with a New Heat Exchanger
If your VW Baywindow Bus is suffering from poor heating or exhaust leaks, it may be time to replace the left-hand side heat exchanger. This high-quality reproduction ensures reliable heating performance and efficient exhaust flow, maintaining the comfort and safety of your classic VW. With its durable construction, secure copper ring gasket seals, and easy installation, this heat exchanger is an essential replacement for keeping your vehicle running smoothly.

Introducing the Replacement Right Hand Side Heat Exchanger for VW Baywindow Buses equipped with 1700cc to 2000cc Type 4 engines, manufactured from 1972 to 1978. This high-quality reproduction heat exchanger is designed to restore proper heating and exhaust function in your classic VW, providing a reliable replacement for the original unit. The heat exchanger is an essential part of the heating system, utilizing exhaust heat to warm the cabin while ensuring efficient exhaust flow.

Key Features:

• Wide Compatibility: Specifically engineered for:
  • VW Baywindow Buses with 1700cc to 2000cc Type 4 engines, produced from 1972 to 1978.
• Copper Ring Gasket Seals: This heat exchanger uses copper rings as gaskets to seal the connection to the cylinder head, providing a secure and leak-free fit. The copper rings ensure durability and effective sealing, maintaining the integrity of the exhaust and heating system.
• Good Quality Reproduction: Manufactured to high standards, this reproduction heat exchanger closely matches the original in fit, function, and appearance, providing reliable heating and exhaust performance.
• Direct Fit Replacement: Designed as a direct replacement for the original right-hand side heat exchanger, ensuring easy installation and a perfect fit, restoring the heating and exhaust functions of your VW Baywindow.
• Bundle Kit Option Available: For a complete installation, consider the full heat exchanger bundle kit with fittings (part number 02125609KIT), which includes all necessary gaskets and hardware.

Fitting Requirements:

To ensure a proper fit and seal, the following gaskets and fittings are required for installation:

• 2 x Copper Ring Gaskets: Part number 021256251A – used to seal the connection between the heat exchanger and the cylinder head.
• 2 x Gaskets for Exhaust: Part number 021251261 – used to seal the exhaust connection.

Why the Heat Exchanger is Essential:

The heat exchanger is a crucial component of the heating and exhaust systems in classic VW Baywindow Buses. It uses the heat from the exhaust gases to warm the interior cabin while directing the exhaust flow through the system. Over time, heat exchangers can become corroded, damaged, or develop leaks, leading to poor heating performance, exhaust leaks, and reduced engine efficiency. Replacing a faulty heat exchanger with this good-quality reproduction ensures that your vehicle’s heating system operates efficiently and that exhaust gases are properly managed.

Compatibility:

• VW Baywindow Buses with 1700cc to 2000cc Type 4 engines, manufactured from 1972 to 1978.

This right-hand side heat exchanger is specifically designed to fit these models, ensuring a direct replacement and reliable operation.

Why Choose This Replacement Right Hand Side Heat Exchanger?

1. Restores Heating and Exhaust Function: This replacement heat exchanger ensures that your Baywindow’s cabin heating system operates efficiently and that exhaust gases are properly directed through the system.

2. Good Quality Reproduction: Made to high-quality standards, this heat exchanger closely matches the original part’s specifications, providing reliable performance and durability.

3. Uses Copper Ring Gaskets for Secure Sealing: The use of copper ring gaskets ensures a durable and leak-free seal at the cylinder head, preventing exhaust leaks and maintaining heating efficiency.

4. Direct Fit for Classic VW Models: Specifically designed for VW Baywindow Buses from 1972 to 1978, this heat exchanger offers straightforward installation and a perfect fit.

5. Available Bundle Kit Option: For a complete installation, the full heat exchanger bundle kit (part number 02125609KIT) includes all necessary gaskets and fittings, making it easy to replace the entire heat exchanger setup.

Key Specifications:

• Fitment: For VW Baywindow Buses with 1700cc to 2000cc Type 4 engines from 1972 to 1978.
• Quality: Good quality reproduction for reliable performance.
• Seal Type: Uses copper rings as gaskets where the heat exchanger seals to the cylinder head.
• Fitting Requirements: Requires 2 copper ring gaskets (part number 021256251A) and 2 exhaust gaskets (part number 021251261).

Benefits of Replacing a Worn Heat Exchanger:

• Improved Cabin Heating: A new heat exchanger restores proper heating to the interior of your Baywindow, enhancing comfort, especially during colder weather.
• Prevents Exhaust Leaks: By ensuring a secure and leak-free seal at the cylinder head and exhaust connections, this heat exchanger helps to prevent dangerous exhaust leaks.
• Maintains Engine Efficiency: Proper exhaust flow is essential for optimal engine performance. Replacing a corroded or damaged heat exchanger helps maintain engine efficiency and performance.
• Cost-Effective Restoration: This replacement heat exchanger offers a reliable and affordable solution for restoring the heating and exhaust systems on your classic VW.

Easy Installation:

This Replacement Right Hand Side Heat Exchanger is designed for easy installation, making it suitable for both professional mechanics and DIY enthusiasts. As a direct fit for VW Baywindow Buses (1972-1978), installation is straightforward, restoring the heating and exhaust functions to factory specifications.

Restore Your Baywindow’s Heating and Exhaust System with a New Heat Exchanger
If your VW Baywindow Bus is experiencing poor heating or exhaust leaks, it may be time to replace the right-hand side heat exchanger. This good-quality reproduction ensures reliable heating performance and efficient exhaust flow, maintaining the comfort and safety of your classic VW. With its durable construction, secure copper ring gasket seals, and easy installation, this heat exchanger is an essential replacement for keeping your vehicle running smoothly.

Heater Control Box for Left Hand Heat Exchanger on Type 4 Engines

Ensure optimal heating performance in your VW Baywindow Bus or US Spec Beetle with this top-quality reproduction heater control box. Designed to fit the left hand heat exchanger on all 1700cc to 2000cc Type 4 engines, this heater control box ensures effective heat management and comfort inside your vehicle.

Quality: This heater control box is a top-quality reproduction, providing the durability and performance you need for reliable heating control in your vehicle.

Fitting Requirements:

• Left Hand Side: This heater control box is specifically for the left hand heat exchanger.
• Right Hand Side: If you require the right hand side heater control box, please refer to part number 021256206K.

Applications:

• VW Beetle (US Spec models): 1974 – 1980 with fuel injection
• VW Baywindow Van: 1972 – 1979 with 1700cc to 2000cc Type 4 engines

Key Benefits:

• Reliable Performance: Ensures effective and reliable control of the heat exchanger, providing comfort in various weather conditions.
• Durability: Made from high-quality materials to withstand the rigors of engine heat and prolonged use.
• Perfect Fit: Engineered to match the specifications of the original part, ensuring an easy and secure installation.

Maintain the heating efficiency and comfort of your VW with this high-quality heater control box. Ideal for both maintenance and restoration projects, this component ensures your heating system operates as intended.

Heater Control Box for Right Hand Heat Exchanger on Type 4 Engines

Enhance the heating efficiency of your VW Baywindow Bus or US Spec Beetle with this top-quality reproduction heater control box. Specifically designed to fit the right hand heat exchanger on all 1700cc to 2000cc Type 4 engines, this heater control box ensures effective heat management, providing comfort and reliability.

Quality: This heater control box is a top-quality reproduction, ensuring durability and performance that matches or exceeds the original part.

Fitting Requirements:

• Right Hand Side: This heater control box is specifically designed for the right hand heat exchanger.
• Left Hand Side: If you require the left hand side heater control box, please refer to part number 021256205K.

Applications:

• VW Beetle (US Spec models): 1974 – 1980 with fuel injection
• VW Baywindow Van: 1972 – 1979 with 1700cc to 2000cc Type 4 engines

Key Benefits:

• Reliable Performance: Ensures effective and reliable control of the heat exchanger, maintaining comfort in various weather conditions.
• Durability: Constructed from high-quality materials to endure the heat and stress of prolonged engine operation.
• Perfect Fit: Engineered to the exact specifications of the original part, guaranteeing easy and secure installation.

Maintain the efficiency and functionality of your vehicle’s heating system with this high-quality heater control box. Ideal for maintenance or restoration projects, this component ensures your VW remains comfortable and reliable.