986, 996, 987, 997 low temp thermostat with housing 71°C

986, 996, 987, 997 thermostat, thermostat housing & sealing gasket. This thermostat has the lower than standard opening temperature of 71°C (degrees Celsius).
The Porsche standard opening temp is 83°C (degrees Celsius).

This lower temperature thermostat allows the water jacket around the engine block to operate at reduced temperatures which in turn keeps all the engine cylinders cooler. It is also believed that lower engine operating temperatures can reduce the risk of the engine cylinder bores becoming scored.

This is a popular modification amongst Porsche enthusiasts. It is suitable for race, track-day and road cars.


It is suitable for all engine models of :-

986 Boxster 2.5L, 2.7L & 3.2L (Boxster S) built 1997-2004

996 3.4L (Carrera) & 3.6L (Carrera, Carrera S) built 1998-2005

987 Boxster 2.7L, 3.2L (Boxster S) & 3.4L (Boxster S) built 2005-2008
987 Cayman 2.7L & 3.4L (Cayman S) built 2006-2008

997 3.6L (Carrera) & 3.8L (Carrera S) built 2005-2008

Brand - Wahler

Porsche Part Number - 996 106 013 57, 996 106 125 52
Alternative Porsche Part Number - 99610601357, 996.106.013.57, 996-106-013-57, 996_106_013_57,

Manufacturer Part Number - 4249.71D
Alternative Manufacturer Part Number - 424971D, 4249 71D, 4249-71D, 4249_71D,

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Subject to stock availability and payment authorisation, we aim to pass your orders on to our delivery companies within 2 working days. Delivery to United Kingdom residents can be within 24 hours but customers should allow up to 7 working days. Delivery to European customers can be within 48 hours from order placement but customers should allow up to 10 working days. Other international customers should allow up to 21 working days for delivery.

Suggested delivery times and promise of delivery are made in good faith and every effort will be made to keep to delivery times/dates given, but time and place of delivery shall not be the essence of this contract and the seller shall not be liable for any loss caused through delay or failure to deliver.

Acceptance of Delivery – It is the responsibility of the Buyer to inspect the package on delivery. If any damage is evident the Buyer should reject the package or sign “DAMAGED”. The buyer must be aware that any package signed for cannot retrospectively be claimed against if it is damaged. Once a package is signed for all transport liability ends.

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If the Buyer fails to take delivery of the Goods or any part thereof at the time/date agreed for delivery then the Seller shall be entitled to cancel or suspend such delivery and all other outstanding deliveries and to charge the Buyer with loss suffered. Redelivery will be at the Buyers expense.

New Goods may be returned for a full refund for up to 90 days after receipt. This excludes Special Order Goods.

All returned Goods must be in a saleable condition, in their original packaging and presented with a copy of the original invoice or sales receipt and any other original documentation associated with the purchase.

Any new part that has been fitted to a vehicle cannot be returned for a refund.

No new “Special Order Goods” can be returned with out exception. All special order items are identified on the invoice or sales receipt with the code ‘Special Order’

You are responsible for the cost and risk of loss or damage when returning the Goods, so you should take out enough postal insurance to cover their value.

We will cover the costs and arrange the collection of any faulty Goods.

Please notify us, either by telephone or via email, of your intentions to return a product PRIOR to sending it. We will then provide you with any special instructions.

These terms apply to your order. We may change our terms and conditions at any time, so please do not assume that the same terms will apply in the future.

Your rights to return goods are protected under the EU Distance Selling Directive.

None of these terms affect your legal rights and these are not diminished in any way. If any term is held to be invalid under any applicable statute or rule of law, that term is automatically omitted from the terms to minimum extent necessary to comply with the law and without affecting the validity or enforceability of the remainder.

Exchange Goods

All goods returned for exchange under the refurbished Goods program are sent at the customers cost.Exchange Goods that are damaged due to accident damage or maltreatment will not be accepted for exchange. Where a surcharge has been applied this would not be refunded.The decision to accept goods for exchange is the Sellers and the Sellers decision is final.All exchange goods must be presented within 3 calendar months from the date of dispatch from the Seller in order to receive a refund of the surcharge

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Customers outside of the EU will be able to make their purchases free from all VAT charges. For all export orders your country of residence may impose import duties and taxes on the parts we ship to you. Any additional charges for customs clearance are not included in our prices and require payment upon delivery. Should your order be returned to us, due to unpaid import duties and taxes, restocking fees may be charged to your credit card. Because customs policies vary widely from country to country; we strongly recommend that you contact your local customs authority to confirm any possible import duties and taxes before placing an order.

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New Parts, Used Parts and Obsolete Stock Warranties

a)New Goods
All new Goods carry their manufactures standard warranty and shall be identified in all associated sales paperwork under the "Condition" heading as "New"
i) Limitations to New Goods Warranty -
The Sellers liability only goes so far as to the replacement of the Goods with the same or equivalent item or the refund of the amount paid. The decision to refund is at the discretion of the Seller.
ii) Excluded Goods –
Any Goods used for Racing, Track day use or any form of Motor sport is expressly excluded.
All body glass including – windscreens, rear windows, side windows, headlight glass, and any lamp or light glass. All mirrors, brake pads, clutches, all tyres and all exhaust components are also excluded.
Any Goods with evidence of damage caused by accident damage, incorrect fitment or incorrect use are also excluded.
Any Goods failing due to an associated sub system failure are also excluded.

b)Used Goods
All used Goods with the exception of excluded items listed in ii) shall carry a 30 day, from date of the Buyer receipt/invoice, limited warranty. All used Goods shall be identified in all associated sales paperwork under the "Condition" heading as "Used"
i) Limitations to Used Goods Warranty -
The Sellers liability only goes so far as to the replacement of the Goods with the same or equivalent item, providing stock is readily available, or the refund of the amount paid. The decision to refund is at the discretion of the Seller.
Engines are only covered providing that all drive belts have been replaced with new O.E specification items at the Buyers expense prior to installation. All belt tensioners and idlers have been inspected and replaced as necessary at the Buyers expense prior to installation. New engine oil and filter to O.E. specification have been installed in the engine at the Buyers expense prior to installation.
All gearboxes must have new oil fitted to O.E. specification at the Buyers expense prior to installation.
No costs for labour or any other incurred costs what so ever will be covered.
Any Goods being claimed for must be presented to the Seller before a claim can be dealt with.

ii) Excluded Goods –
Any Goods used for Racing, Track day use or any form of Motor sport is expressly excluded.
All body glass including – windscreens, rear windows, side windows, headlight glass, and any lamp or light glass. All mirrors, brake pads, clutches, all tyres and all exhaust components are also excluded.
Any Goods with evidence of damage caused by accident damage, incorrect fitment or incorrect use are also excluded.
Any Goods failing due to an associated sub system failure are also excluded.

c)Obsolete Stock Goods
All obsolete stock Goods with the exception of excluded items listed in ii) shall carry a 30day, from date of the Buyer receipt/invoice, limited warranty. All obsolete stock Goods shall be identified in all associated sales paperwork under the "Condition" heading as "Obsolete Stock"
i) Limitations to Obsolete Stock Goods Warranty -
The Sellers liability only goes so far as to the replacement of the Goods with the same or equivalent item, providing stock is readily available, or the refund of the amount paid. The decision to refund is at the discretion of the Seller.
Engines are only covered providing that all drive belts have been replaced with new O.E specification items at the Buyers expense prior to installation. All belt tensioners and idlers have been inspected and replaced as necessary at the Buyers expense prior to installation. New engine oil and filter to O.E. specification have been installed in the engine at the Buyers expense prior to installation.
All gearboxes must have new oil fitted to O.E. specification at the Buyers expense prior to installation.
No costs for labour or any other incurred costs what so ever will be covered.
Any Goods being claimed for must be presented to the Seller before a claim can be dealt with.
ii) Excluded Goods –
Any Goods used for Racing, Track day use or any form of Motor sport is expressly excluded.
All body glass including – windscreens, rear windows, side windows, headlight glass, and any lamp or light glass. All mirrors, brake pads, clutches, all tyres and all exhaust components are also excluded.
Any Goods with evidence of damage caused by accident damage, incorrect fitment or incorrect use are also excluded.
Any Goods failing due to an associated sub system failure are also excluded..