On Dec 22, 2013, at 9:28 AM, Jeffrey Lee <jeffrey_lee_aqua@YAHOO.COM> wrote:

> My 83 diesel I4 has 3 core plugs, one of which I've replaced with a 120v block heater for use in cold temps, and which helps immensely.
> 
> A friend with a waterboxer Vanagon (not sure if it's a 1.9 or 2.1L) asked if one could be installed in his engine but I don't know if these engines have core plugs. A bit of online shopping turned up nothing but inline coolant heaters which are installed waaay up near the radiator, and hot-plate-style contact heaters which must be somehow adhered to the underside of the oil pan.
> 
> Anyone know of a simpler, more effective solution?
> 
> Jeff

Since the water boxer doesn�t have core plugs, those are your choices.

http://www.van-cafe.com/home/van/page_1068_126/86-91-vanagon-engine-coolant-heater.html
http://www.thesamba.com/vw/forum/viewtopic.php?t=536165
<http://www.oreillyauto.com/site/c/search/Engine+Heater+-+Hose+Type/01373/C0332.oap?year=1984&make=Volkswagen&model=Vanagon&vi=1286399>

Jim