543-30 and 543-34 543-34 543-30

543-30 and 543-34 Relief Pipes

543-30 and 543-34 Relief Pipes have always been scarce, “unobtainium” for V and VL builders and maintenance mechanics. And while servicing your machine they are tedious and difficult to thread between cam chest and primary chain case. Most OEM originals have been compromised during their existence either by inherent abuse or alterations to ease assembly. Fitment is never simple or quick. There have been attempts made by enthusiast cottage-industry folks or by shoddy importers copying a compromised original, generally a disappointment.

Replicant Metals searched extensively to find authentic Harley Davidson NOS crankcase breather pipes to use as samples. Then we test-fitted each pipe on several different machines to make sure they could be properly installed on the 74 and 80 flatheads.  Aficionados of the VL world were consulted concerning finish and details. We simply tried our best to offer you accurate 543-30 and 543-34 Relief Pipes with details as HD had originally engineered.

After analyzing the complexity of each pipe, it was decided the proper method to accurately and repeatedly bend the tubes would be with a digitally programmed tubing bender. After site interviews with local industry, a specialist was engaged that could perform the required service. The machine work for the 3 additional pieces of hardware was again handled by our favorite qualified associates. Replicant Metals fabricated holding jigs for trimming the tubes to length and to secure the tubes while the vent slits were being cut. The retainer collar and end plug were sweated solidly in place, the flux neutralized, and they were coated with a light oil to prevent surface rust.

543-30 Relief Pipe is suited for all 1930-33 VL models with iron oil pumps and
543-34 Relief Pipe is needed for 1934-36 VL models with the alloy oil pump.

As always, if your machine deserves the best, you require Replicant Metals. Proudly produced by the finest metals smiths and craftsmen in the galaxy.


Replicant Metals • 717-626-1618 • info@replicantmetals.com • Pennsylvania USA

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