...or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4365386
Mfg#:
ECSF30N55BPKT
Ships in 8 Business Days
ON SALE!
$515.99
This product was last offered at the strikethrough price on 01-03-2026
Hydraulic tensioner for water pump belt, just tensioner, does not come with relay lever assembly
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
21803
Mfg#:
11287835417
Ships in 5 Business Days
4% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$165.99
This product was last offered at the strikethrough price on 06-03-2026
Replace this any time you remove the damper. This is the also the S55 crank hub bolt!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
2498174
Mfg#:
11217614270
In Stock
6% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$42.70
This product was last offered at the strikethrough price on 06-03-2026
Complete conversion kit for converting alternator tensioner over to the more reliable hydraulic tensioner design
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
517967
Mfg#:
11287838797
In Stock
ON SALE!
$113.99
This product was last offered at the strikethrough price on 05-02-2026
This is the main belt tensioner for A/C, and alternator
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Brand:
ES#:
3648482
Mfg#:
11287594969
In Stock at Vendor
$72.99
This product was last offered at the strikethrough price on 04-15-2026
Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Replace your vibration damper before it leaves you stranded on the side of the road - includes all of the specialty tools necessary to make your repair quick and easy!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4780238
Mfg#:
11238511371TKT
Ships in 4 Business Days
ON SALE!
$733.99
This product was last offered at the strikethrough price on 01-03-2026
...or at least as "Bulletproof" as your F3X N55 will ever be! Includes a crank bolt capture kit, crank seal plate, oil filter housing gaskets, and all of the components required to perform this upgrade service.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! Includes 5w-40 oil which is a slighty higher viscosity than recommended by BMW - great for performance ap
Brand:
ES#:
4660307
Mfg#:
ECSF30N55BP540KT
Ships in 8 Business Days
ON SALE!
$513.99
This product was last offered at the strikethrough price on 01-03-2026
Drives power steering pump, alternator and A/C compressor
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Includes both rollers for accessory belt
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Everything you need to service your belt drive system using high quality parts
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Utilizes high quality components and our performance Kevlar reinforced belts
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
4636449
Mfg#:
11287848605KBKT
Ships in 8 Business Days
$414.99
This product was last offered at the strikethrough price on 05-06-2026
Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Reduces vibrations and connects accessories
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat!
Pulleys drive accessories essential to vehicle operation. Whether you need to install a stock original equipment pulley during a repair, or improve engine performance and appearance with a lightweight aluminum or underdrive pulley, count on ECS Tuning for pulley solutions that work.
Partial Replacement
