Thermostat Housing for Citroen, Peugeot & Mini EP6 - Compare TH1103, TH1105, MAP-100436, MAP-100437, TH1434, TH1449 & MAP-100438

Vehicle Fitment & Part Details

This listing covers seven thermostat housing variants for the PSA/BMW EP3, EP3C, EP6, EP6C, EP6DT, EP6CDT, EP6CDTX and Mini N12/N14/N16/N18 1.4/1.6 petrol engine families fitted across Citroen, Peugeot and Mini. All seven SKUs share the same 77 kW engine-family platform but differ by pipe count, sensor configuration and pipe attachment style. Because visual identification is critical on this component, compare your removed unit to the comparison photos above before ordering. Confirm compatibility by matching the listed fitment details and VIN/engine/chassis information where variants exist.

Compare pipe count, sensor configuration, and pipe attachment style to your removed unit and choose the matching SKU.

SKU Comparison

Key Details

Component

Thermostat Housing

Engine Family

PSA/BMW EP3, EP3C, EP6, EP6C, EP6DT, EP6CDT, EP6CDTX, 5FS, 5FV and Mini N12/N14/N16/N18 (all rated 77 kW in this fitment set)

Engine Coverage

1.4 / 1.6 petrol

Key Benefits

• Covers the full Citroen / Peugeot / Mini EP3–EP6 family thermostat housing range in one listing — choose by pipe count, sensor type, and pipe attachment style.
• Variants including wiring harness or sensor wire are clearly marked in the comparison table above.
• All seven variants share the same 77 kW engine-family platform — the external visual differences are the identifying features.

Vehicle Fitment

Includes 37 supplied applications across the EP3/EP6 and Mini N-series engine families. Visual match to the comparison photos is required before ordering — the fitment list below covers the engine family, not the specific variant.

Fitment Notes

• Always match OEM reference number(s) and vehicle details before ordering. Confirm exact fitment using VIN, engine code, or chassis number if multiple variants exist.
• Visual match required: Because the seven SKUs differ by pipe count, sensor type, and pipe attachment style, always compare your removed unit to the comparison photos above before choosing a SKU.

Installation / Use / Maintenance Tips

• Before ordering, remove and photograph the old thermostat housing — count pipes, identify the sensor type (1 × 4-pin, 2 × 2-pin square, or 2 × 2-pin oval), and check pipe attachment style (quick release vs clamp on).
• Flush the cooling system fully before fitting the new housing to remove debris and old coolant.
• Replace related seals, O-rings, hoses, and coolant during installation.
• Bleed the cooling system fully and check for leaks after installation.
• After first heat cycle, re-check coolant level and verify there are no leaks at the housing, pipes, or sensor connections.

Common Questions

Which SKU do I need?
Compare your removed thermostat housing to the seven photos at the top of this listing. Check three things: (1) pipe count (5 or 6), (2) sensor type (1 × 4-pin, 2 × 2-pin square, or 2 × 2-pin oval), and (3) pipe attachment style (quick release pipe or clamp on pipes). The SKU that matches all three is the correct one.

Why are there seven different SKUs for the same engine?
The PSA/BMW EP3–EP6 and Mini N12–N18 engine family was produced across many model years with production changes to the thermostat housing, affecting pipe count, sensor configuration, and hose attachment style. The engine code alone is not enough to identify the correct housing — visual comparison is required.

How do I confirm fitment if there are multiple variants?
Use VIN, engine code, and a physical comparison to the photos above. If unsure, send us a photo of your removed unit and we'll help confirm the correct SKU before ordering.