This is the main belt tensioner for A/C, Alternator, and power steering.
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Brand:
ES#:
21777
Mfg#:
11287563927
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$179.99
This product was last offered at the strikethrough price on 06-11-2026
$167.99 USD
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Lifetime Replacement
This is the main belt tensioner for A/C, Alternator, and power steering.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Brand:
ES#:
3450773
Mfg#:
11287563927
$60.99 USD
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on orders $49 and up
Lifetime Replacement
Worn hardware should be replaced before it fails
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms Secures the top of the hydraulic alternator belt tensioner assembly to the bracket
Brand:
ES#:
14586
Mfg#:
07119904532
$7.57 USD
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on orders $49 and up
Lifetime Replacement
Everything you need to service your belt drive system using genuine BMW components
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
2581872
Mfg#:
OEN54BLTKT
$371.99 USD
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Lifetime Replacement
M10X35
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Brand:
ES#:
2641280
Mfg#:
07129905738
16% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$9.69
This product was last offered at the strikethrough price on 06-11-2026
$8.15 USD
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on orders $49 and up
Lifetime Replacement
The higher idler pulley
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
21769
Mfg#:
11287556251
12% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$82.24
This product was last offered at the strikethrough price on 03-25-2026
$71.98 USD
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Lifetime Replacement
The higher idler pulley
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Brand:
ES#:
3451040
Mfg#:
11287556251
$28.89 USD
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on orders $49 and up
Lifetime Replacement
The lowest of the idler pulleys on the accessory drive belt.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
21772
Mfg#:
11287557851
10% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$82.99
This product was last offered at the strikethrough price on 06-11-2026
$74.99 USD
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Lifetime Replacement
Hardware for drive belt assembly
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
20551
Mfg#:
11237557561
5% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$21.99
This product was last offered at the strikethrough price on 06-11-2026
$20.99 USD
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on orders $49 and up
Lifetime Replacement
For Drive belt Pulley
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Brand:
ES#:
2159205
Mfg#:
11237574827
7% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$104.99
This product was last offered at the strikethrough price on 06-11-2026
$97.99 USD
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Lifetime Replacement
OE Equivalent for N54 Engine
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Brand:
ES#:
4027414
Mfg#:
7PK1660
$65.92 USD
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Lifetime Replacement
The lowest of the idler pulleys on the accessory drive belt. Featuring NTN/NSK bearing.
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Brand:
ES#:
2978865
Mfg#:
11287557851
$23.99 USD
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on orders $49 and up
Lifetime Replacement
Used to cover the securing bolt
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Brand:
ES#:
21792
Mfg#:
11287795159
$6.99
This product was last offered at the strikethrough price on 03-04-2026
$2.99 USD
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on orders $49 and up
Lifetime Replacement
The higher idler pulley
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Brand:
ES#:
2593864
Mfg#:
11287556251
$35.99
This product was last offered at the strikethrough price on 05-07-2026
$33.99 USD
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on orders $49 and up
Lifetime Replacement
Upgrade your engine bay and protect your steering rack with the Vargas Billet Power Steering Reservoir.
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Brand:
ES#:
5445743
Mfg#:
VTT-BPSRES-RED
$314.99 USD
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Upgrade your BMW’s engine bay aesthetics and durability simultaneously with the VTT Billet Power Steering Reservoir in Anodized Blue.
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Brand:
ES#:
5445731
Mfg#:
VTT-BPSRES-BLUE
$314.99 USD
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More About Engine Drive Belt Parts
Drive belts transfer crankshaft power to various accessories, including the alternator, water pump, power steering pump, and air conditioning compressor. Replacement of drive belts, serpentine belts, and drive belt tensioners at recommended service intervals helps you avoid untimely breakdowns and expensive vehicle repairs.