Thermostat housing OPEL ASTRA SPORT 2017

OEM: 55496778

Disassembled car photo

Engine running

  • Tested before shipping
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Details for this exact part

Code
55496778
OEM
55496778
Condition
Used
Availability
Out of stock
Make, model
OPEL ASTRA SPORT 2015-
Year
2017 (A)
Engine
Diesel 1.6L 100KW B16DTH LVL
VIN
W0LBD8EG2H8095335

What is this part and why does it matter?

The thermostat housing holds the thermostat in place and connects the coolant circuit between the engine and radiator.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

  • Coolant leak at the housing seams
  • Overheating or slow warm-up from a stuck thermostat combined with a leaking housing
  • Cracks visible on inspection

Installation information

Requires draining the coolant before removal — always fit a new gasket or O-ring when reinstalling.

Frequently asked questions

Most often from age and heat cycling making plastic housings brittle, or from over-tightening bolts during a previous thermostat replacement.

Donor vehicle description

VIN
W0LBD8EG2H8095335
Make, model
OPEL ASTRA SPORT
Year
2017 (A)
Engine
Diesel 1.6L 100KW B16DTH LVL
Transmission
6-speed Mechanic - MZ4
Drive
Front
Equipment
LHD
Colour
GAZ (40R)

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What our customers say

  • Price: excellent.

    D
    Didier V.
    August 2026

  • Super good! They came through with the part I needed, quickly and at a fair price! Thanks, and I definitely recommend!

    I
    Ilmars K.
    August 2026

  • I ordered a Heater Blower Motor Resistor for a Toyota Avensis. Delivery took eight days from Latvia to Ireland. I installed it, and everything works perfectly. I wish this company success.

    A
    Aleksandr L.
    Toyota Avensis
    August 2026

  • No complaints about Evro Trans itself, everything's fine. But the delivery..... It felt like the order was being carried by turtles. 4 days from Riga to Daugavpils. Judging by the tracking, the parcel just sat somewhere behind a shed for 3 days, then they found it and delivered it the next day. I think that's why I won't be ordering there again.

    P
    Paul F.
    June 2026

  • Super fast delivery of the part, and good quality of the used part. Thanks for the service.

    N
    Natālija I.
    May 2026

  • I ordered antifreeze heaters and an auxiliary pump. Everything arrived quickly, the very next day, and matched the description. I'm satisfied.

    J
    Juris J.
    February 2026

  • Excellent service, timely delivery, and complete transparency at every step. I highly recommend EvroTrans to anyone looking for a reliable partner!

    E
    Egor S.
    November 2025

  • Bought a front fender for my car. I liked it! After payment they sent more than 20 photos of the problem areas, and it was packed very securely - took a while to unwrap.

    I
    Igors K.
    Front fender
    October 2025