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BMW Z8 External Engine Parts

BMW Z8 External Engine Parts Looking for parts under the hood of your BMW? This section is for parts and accessories mounted to, and around, the engine. 'External' engine components covers parts and systems up to and after the cylinder head. Examples include crankcase vent valves, secondary air systems, idle control valves, oil filler caps, valve cover trim, and more. For parts within the engine and cylinder head see our 'Internal Engine Components' section.
You're currently viewing parts for your (E52) Z8 2000-2003. Reset your chassis
For accurate results, specify your model below.
Timing Chain Deflection Rail - E39 540, E38 740i/il (m62), E53 X5 4.4i, 4.6is, This BMW timing chain deflection rail is "U" shaped and mounted to the front of the engine under the timing cover. Mission Trading Company is a worldwide leader in the manufacturing of European, Japanese and domestic auto parts. With factories around the world producing parts to the most stringent of standards MTC is there with the parts for your next project.

Mission Trading Company is a worldwide leader in the manufacturing of European, Japanese and domestic auto parts. With factories around the world producing parts to the most stringent of standards MTC is there with the parts for your next project.

This item fits the following BMWs:
1997-2003 E39 BMW 540i
1996-2001 E38 BMW 740i 740ill
2000-2003 E53 BMW X5 4.4i X5 4.6is
2000-2003 E52 BMW Z8 Alpina Roadster
MTC
Part #: 11311741777
Price: $114.95 (USD) 
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Turner Plug-and-Play IAT Relocation Kit

All vehicles will lose some degree of performance due to heat soak under the right operating conditions.  Engine management systems constantly monitor operating conditions and modifying parameters based on sensor inputs. BMW integrated the intake air temp sensor in the MAF housing on models such as the E39 M5, and, being sandwiched behind a hot radiator and in some applications next to an even hotter valve cover, this is less than ideal for performance applications. Absorbing excess heat from its surroundings, the MAF can’t shed it fast enough, and the ECU reads an inaccurately high intake air temperature. Compensating for this false hot air measurement, the ECU pulls timing and runs a richer fuel mixture, resulting in a significant loss of torque.

What can you do?  Locate an intake air temp sensor in a location where it can properly measure incoming air temps and where it's less prone to heat soak. Mounting the sensor further away from the heat source and isolating it from the MAF housing, it can both resist the effects of heat soak longer and respond to temperature changes more quickly.  The result is you’ll experience reduced torque loss and more consistent power output when you’re pushing your engine hard. 

The Turner engineering team was initially skeptical of the claimed performance benefits of this modification. They first set out validate the functionality and performance benefit of a temp sensor relocation. Replicating stop-and-go traffic heat soak in a 2001 540i was a simple task in a controlled environment - their dynometer. First the car was heat soaked to simulate being stuck in traffic or moving at low speeds by running the car four times on the dyno with the dyno's cooling fans disabled. The fans were then turned on for three more runs to observe the recovery rate once air flow was reintroduced. The test: following this procedure once with a stock IAT, and once with their relocation kit in place. 

The result? Turner recovered 11lb-ft torque at 2500rpm through use of their relocation kit, with even greater recovery to be found for M5 owners. Here are the heat soak-related torque losses Turner experienced:

Stock IAT location:
18rwtq at 2500rpm
10rwtq at 3000rpm
9rwtq at 3700rpm

Turner IAT Relocation:
7rwtq at 2500rpm
5rwtq at 3000rpm
5rwtq at 3700rpm

**Click here for installation instructions**

The Turner engineering team designed a complete plug and play kit (unlike all other options on the market) that makes for quick, easy, and reversible installation. Weather-sealed connectors keep out the elements, while sheathed wiring offers a clean appearance underhood. With a harness nearly 3 feet long - the Turner IAT relocation kit offers flexibility in positioning, but not too long that you're left with unsightly excess wiring. Turner recommends positioning the sensor in a location away from engine heat, but still within the intake ducting to achieve accurate intake temp readings - such as the far side of the base of the airbox. Vehicles with cold air intakes with cone-style filters can even position the sensor in the end of the filter. Simply drill a hole in your (cool) location of choice and plug in the harness. More information including installation instructions and some good examples of sensor mounting locations can be found in our DIY PDF. 

We include everything you need to relocate your IAT, just select your desired sensor brand below - Genuine BMW or original equipment Beru.

Also the perfect plug-n-play option for anyone looking to upgrade their intake to utilize an Alpha-N tune!

Note for vehicles with M62 engine: applicable to 1999 and up

Turner Motorsport
Part #: 014579TMS
Price: $131.40 (USD) 
$139.45 (Sale - Save 6%)
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Secondary Air Valve - E39 M5, E36 318i M44, Z3 1.9 This secondary air shut off valve helps to reduce emissions by mixing fresh air with the exhaust. When this part fails cause a engine fault code and it will trigger a "service engine soon" light.

This is also one of the main causes of carbon build-up in the E39 M5 secondary air system. This shut-off valve can allow exhaust gas to blow back into the system where it accumulates. Regular replacement of this part will help prevent that build-up.

This item fits the following BMWs:
1996-1998 E36 BMW 318i 318is 318ti 318ic with M44 engine
1997-2003 E39 BMW M5
1996-1998 Z3 BMW Z3 1.9
2000-2003 E52 BMW Z8 Roadster
Genuine BMW
Part #: 11721433713
Price: $89.84 (USD) 
$101.37
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N15 Design Secondary Air Pump Block Off Plate - with Gasket

For elimination of the air pump control valve, made from CNC machined 6061 aluminum.

 

N15 Design
Part #: SAPBOPG
Price: $29.49 (USD) 
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Lower Timing Chain Tensioner - E39 M5, Z8 This Genuine BMW timing chain tensioner piston mounts at the bottom of the timing system. Over time this piston seals can fail causing the timing chain to become slack. This can initally lead to excess valve train noise and over timeit can damage the other timing components. Replace the timing chain tensioner on your S62 V8 engine today.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

This item fits the following BMWs:
1999-2003 E39 BMW M5
2000-2003 E52 BMW Z8 Roadster
Genuine BMW
Part #: 11311406261
Price: $139.46 (USD) 
$160.77 (13% off MSRP)
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