Nihon Radiator Co #51S Part# 27106N4300 Heater Core Housing Assembly for 1978 Datsun 280Z w/Inline 6cyl Turbo OEM
This is a genuine OEM heater core housing assembly (Nihon Radiator Co #51S, Part# 27106N4300) for the 1978 Datsun 280Z equipped with the inline 6-cylinder turbo engine. This assembly is ideal for restoration projects or as a direct replacement to maintain originality and proper function in your classic Z car. Fits 1978 Datsun 280Z models and may be compatible with other late S30 series vehicles. Please verify fitment before purchase. Photos show the actual item you will receive.

Key Specifications
Manufacturer: Nihon Radiator Co (later Calsonic, now Marelli)
Part Number: 27106N4300
Model Compatibility: 1978 Datsun 280Z (Inline 6 Turbo)
Material: Metal and factory plastics
Application: Heater core housing assembly
Mounting: Direct fit, OEM replacement
Year: 1978

Approx. Dimensions (not including hose): 18" L x 15" D x 12" D
Approx. Weight Overall: 11 lbs, 4 ozs

Sold as is. No warranty from the seller. No Returns.

CONDITION NOTE: Used. This part appears to be in good physical condition per included pictures, but not sure of its operational status. The housing is dirty with some surface rust. The assembly appears to include the OEM heater core and housing unit. All mounting points appear to be  intact, and the unit shows typical wear consistent with age but no major cracks or damage. Does not come with any original boxes, packaging, or any related paperwork. Will carefully pack and insured for safe shipping. See all pictures to know what you are purchasing.

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Source of product research for this listing was from an AI engine and I cannot be sure that it is 100% accurate. I encourage you to confirm this information with your own research.
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Short background on the manufacturer
Nihon Radiator Co., founded in 1938, specialized in automotive heat exchangers and radiators, quickly becoming a key supplier to Nissan and other Japanese automakers. In 1952, the company was renamed Nihon Radiator Company and later adopted the "Calsonic" name in the late 1970s, reflecting its global expansion. Through mergers and acquisitions, it became part of Calsonic Kansei and, most recently, Marelli, one of the world’s largest automotive parts suppliers. The company’s products are renowned for quality and reliability, especially in classic Nissan and Datsun vehicles.

Release date or age of item
This heater core housing assembly was manufactured for the 1978 Datsun 280Z, making it approximately 47 years old as of 2025.

Keywords
Datsun 280Z, 1978 280Z, heater core, Nihon Radiator, OEM 280Z part, 27106N4300, Calsonic, S30 heater, inline 6 turbo, Z car heater, Datsun OEM, 280Z HVAC, classic Z part, Nissan 280Z, Z car restoration

NOTE: If you would like to see what other Vintage Auto Parts that I currently have listed, please check out my eBay Store page:

https://www.ebay.com/str/quantumonlinesalesservices/Auto-Parts/_i.html?store_cat=44481808011