Rear Engine Tin, without Hose, with Heat Riser

OVERVIEW

Maintaining the thermal integrity of your air-cooled Volkswagen is the single most important factor in ensuring the longevity of your engine. This Rear Engine Tin, often referred to by seasoned builders as the pulley tin, plays a critical role in the cooling cycle by acting as a physical barrier between the cool air intake of the fan shroud and the scorching heat generated by your exhaust system. When this piece is missing, damaged, or improperly fitted, your cooling fan will inevitably draw in recycled hot air from beneath the car, leading to skyrocketing cylinder head temperatures and the dreaded risk of dropped valve seats. This EMPI-style replacement is precision-engineered to provide a tight seal, ensuring that your cooling system works exactly as the original engineers intended by maintaining a high-pressure zone of cool air above the engine while venting waste heat out the bottom.

This specific version of the rear engine tin is the "clean" configuration, designed specifically for enthusiasts who are not running stock heater boxes or fresh air hoses but still require the functional use of intake manifold heat risers. By eliminating the large, unsightly heater hose ports, you achieve a much tidier engine bay appearance that is perfect for street rods, dune buggies, or performance Beetle builds where simplified plumbing is a priority. Finished in a durable black coating, this tin provides a professional, factory-plus aesthetic. The precision-stamped heat riser cutouts allow your exhaust pre-heat pipes to pass through without interference, ensuring your carburetor won''t ice up during cold starts. It''s an essential component for anyone looking to optimize their engine''s cooling efficiency while streamlining the visual appeal of their air-cooled powerhouse.

FITMENT

• Volkswagen Beetle (Standard & Super): 1966-1977
• Volkswagen Karmann Ghia: 1966-1974
• Volkswagen Thing (Type 181): 1973-1974
• Engine Compatibility: 1300cc, 1500cc, and 1600cc Upright Configurations (Single or Dual Port)
• Application Note: Ideal for engines running "J-Tubes" or performance headers without heater boxes.

SPECS

• Material: Heavy-duty stamped steel for vibration resistance and durability.
• Finish: Industrial-grade Satin Black coating.
• Configuration: Smooth face (no heater hose holes) for a custom look.
• Cutouts: Dual precision-stamped slots for intake manifold heat riser pipes.
• Mounting: Standard 5-hole mounting pattern for factory engine tin screws.
• Weight: 1.57 lbs, providing a sturdy yet lightweight thermal barrier.
• Part Number: 4587-22 / 00-8937-0.

PRO TIPS

1. Prioritize the Engine-to-Body Seal

Installing this rear tin is only half the battle; you must ensure that the rubber engine-to-body seal is properly seated in the channel of this tin. If there are gaps between the tin and the body of the car, hot exhaust air will find its way back into the engine compartment. We always recommend using a light coat of silicone spray on the rubber seal to help it slide into the tin''s metal groove during installation. Don''t settle for a loose fit; a 100% airtight seal is what separates a reliable daily driver from an engine that overheats on long highway hauls.

2. Align Before Final Tightening

VW engine tin can sometimes be finicky due to years of heat cycles or aftermarket exhaust variations. When installing this rear tin, start all of your M6x1.0 screws by hand just a few threads deep. Do not tighten any of them until every screw is started. This allows you to shift the tin slightly to align the heat riser cutouts perfectly with your intake manifold pipes. Once everything is centered and the tin is sitting flush against the adjacent cylinder covers, tighten the screws in a cross-pattern to prevent warping or "tin canning" sounds during engine operation.

3. Manage Heat Riser Clearances

Because this tin features heat riser cutouts, you must ensure that your intake manifold pre-heat pipes are not vibrating directly against the metal of the tin. Over time, metal-on-metal contact can lead to annoying rattles or even wear a hole through the pipe. If the clearance is too tight, you can slightly "massage" the edges of the cutouts with a pair of pliers or a small file to provide a 1/8-inch gap. Additionally, if you are running an aftermarket header that doesn''t use heat risers, you can easily block these small holes with a scrap piece of sheet metal and some pop-rivets to maintain a total thermal seal.