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Genuine BMW 11-31-1-744-347 Timing Chain Tensioner Piston

(BMW 535i 1985-93, 528i 1979-81, 530i 1975-78, 320i 1977-83, 2002 1967-76, 635CSi 1985-89, 318i 1984-85, 2002tii 1971-74, 735i 1985-92 + 12 more models)

Manufacturer

Picture for manufacturer Genuine BMW

Part Number

11-31-1-744-347
11 reviews
Sale Price

$37.42

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Product Details

The Genuine BMW 11-31-1-744-347 is an OEM replacement timing chain tensioner piston designed to maintain correct tension on the timing chain throughout engine operation. As a normal wear item within the timing chain tensioner assembly, this piston is a critical component for ensuring precise valve timing and long-term engine reliability.

The timing chain tensioner piston works hydraulically, using engine oil pressure to continuously regulate tension on the timing chain. Without proper tension, the timing chain can slap against guide rails, causing accelerated wear, noise, and potentially costly engine damage. Replacing a worn piston restores the tensioner's ability to maintain consistent chain tension from cold start through normal operating temperature.

Key Features:

  • Genuine BMW OEM part — manufactured to exact factory specifications
  • Hydraulic piston design maintains consistent timing chain tension
  • Direct-fit replacement requiring no modifications
  • Recommended for replacement during timing chain tensioner service
  • Engineered for BMW M10, M30, and M70 engine families

When servicing the timing chain tensioner, replacing the piston at the same time is strongly recommended to restore full tensioner performance. This part is sold individually.

OEM Part Numbers: 11-31-1-744-347 | 11311744347 | 11 31 1 744 347 | 11.31.1.744.347

Products specifications

Fits

BMW 535i 1985-93, 528i 1979-81, 530i 1975-78, 320i 1977-83, 2002 1967-76, 635CSi 1985-89, 318i 1984-85, 2002tii 1971-74, 735i 1985-92, 750iL 1988-94, 850i 1991-92, 3.0CS 1971-74, 633CSi 1978-84, 535is 1988, 733i 1978-84, 1600 1967-71 + 6 more models

I had an issue with a shipping discount. I received a 30% shipping discount but the cart would not apply it.

Shopping was easy

Great customer service and support. a live person answered the phone and was able to reccomend the correct product for my vehicle. Best price online too........i woould most absolutely use them again! Great company!

Fast & easy

2 day turnaround and the best price anywhere? What's not to love? Great experience, and will definitely be a repeat customer.

Great service so far

so far, so great!

Great Price and fast ordering

Looked everywhere for a good price on Warn locking hubs, they were the best price around. Shipped right away.

Everything went good, order shipped out the next day. The prices were good but the shipping cost was way to high $25 dollars for 2 head gaskets and some bolts oil pan bolts.

I've been through several websites looking for this tire. I was hoping to buy two but glad to see that there's at least one in stock and confirmed. So far everything is good.

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