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Air Cooled VW 1950-1979 Accelerator Cable or Heater Cable Barrel Nuts

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Part #: 355-375
VW Part #: 311-129-777
Availability: In Stock - Ships today if ordered by 3 PM CT
Fits Years:
  • Bay Window Bus 1968-1979
  • Karmann Ghia 1963-1974
  • Split Window Bus 1956-1967
  • Standard Beetle 1950-1977
  • Super Beetle 1971-1979
  • Thing 1973-1974
  • Type 3 1962-1973
Prop 65
  • Description
  • Knowledge

1950-1979 Accelerator Cable or Heater Cable Barrel Nuts

These Accelerator / Heater Cable Barrel Nuts hold the cable adjusted to fully operate the lever for maximum performance in your Air Cooled VW. Through hole is approx. 4mm diameter. 7mm hex head bolt.

  • Sold as a Pair
  • VW 311129777


Also known under these part numbers: (For reference only)

  • 00-3156-7
  • 311-129-777
  • 707924464726

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Heat Up Your Air Cooled VW

Heat Up Your Air Cooled VW

For those of you who keep your Air Cooled Volkswagen running all year long, now is a good time to ensure that your heater boxes are ready for the coming Winter. Mid America Motorworks takes a cue from Rob and David's Aircooled Volkswagen Pages to help you ensure that your VW cabin is warm on the coldest days with properly working heater control cables.

Heater Control Cable Removal & Installation

Keep in mind that the heater cable is actually two cables joined together near the control lever (on the right, next to the passenger seat). If any part of the cable is broken, the whole assembly must be replaced. Very early VW heating systems are controlled with a round knob on the tunnel behind the Emergency Brake Handle, then progressing up by the shifter from 1956-1964. The later model (1965-1979) VW Beetle Heater Systems are controlled by levers on either side of the Emergency Brake Handle. Give yourself a day or the weekend to complete this project.

You'll need a few basic tools for the job:

  • Wheel chocks
  • Jack and jack stands
  • Vice grips
  • Standard and Phillips Screwdriver
  • Metric wrench and socket set
Graphic representation of the tools required for the job
  1. Block the front wheels of your VW to raise the rear of the car and support it on jack stands.
  2. Locate the heater control cables where they come out of the floor pan on both sides of the transaxle. In some cases, they could be broken or missing.
  3. If the cables are broken off and the heater cable channels is plugged, you've got a problem. The plug in the channel will most likely be near the end. It may be possible to ream the channels out with a wire coat hanger or by simply cutting off the protruding portion of the tube. DO NOT WIRE THE HEATER BOXES OPEN!
  4. If the cables are in place and are moveable, hold the clamping sleeve with vice grips and loosen the clamp bolt. Slip the cable out and remove the clamping sleeve from the control lever.
  5. Your VW originally had cable seals on the guide tubes. If they're still there, remove them now.
  6. Remove the passenger side front seat to give yourself room to work; then remove the handbrake rubber boot.
  7. Remove the nut from the right side heater control lever and lift off the lever and friction discs.
  8. Detach the control cable from the lever and pull the two cables out of the tubes.
  9. Inspect all components for wear and damage and replace as needed. Make sure the flap mechanism and controls are moving freely. Lubricate as needed.
  10. Install return springs between the bottom of the lever assemblies and the engine tin (if your VW is so equipped - the return spring is in the heater box valve mechanism).
  11. Apply a light coat of grease to the new cables and insert them into the tubes from the control lever. The longer cable goes in the bottom tube and the shorter one goes in the top tube.
  12. Connect the cable to the control lever, then install the lever, friction discs and mounting nut. Tighten the nut until sufficient friction is felt when the lever is moved.
  13. Reinstall the rubber boot over the handbrake assembly.
  14. Working under the car, insert the sealing plugs onto the cables (small pieces of vacuum hose, slit down the side, work well for this. Again, make sure the cable is well-greased).
  15. Reinstall the barrel clamps and slip the cables into them. Take up all the slack in the cable and tighten the clamp bolt.
  16. Have an assistant operate the heater control while you check for full movement of the lever.
  17. Install the corrugated heat tubes between the heater boxes and the body of the car (inlets to the heater channels that run forward on either side of the car).

Your Volkswagen is now ready to keep you warm on the cooler driving days.

loosen the clamp bold Locate the heater control cables where they come out of the floor pan on both sides of the transaxle displays parts: Cable Seals, Heater Cable and Heater Clamp

courtesy of Rob and Dave's Aircooled Volkswagen Pages

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