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Motorcycle Info and Accessories

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I recently bought a new Suzuki. Suzuki motorcycles come with a very non-standard 20mm x 1mm thread size, with the result that your choice for filters is quite limited, and there are no automotive filters that will fit. So, I decided to take some filters apart and see for myself what the available options are and how they compare.

The nominal specification for the Suzuki filter is 20 x 1mm threads, 11 psi by-pass valve, anti-drain back valve. The columns below are Media pleats * depth * height, media square inches, anti-drain back valve material, seal material, Mechanical grade, Media grade. In these days of rampant grade inflation, I feel compelled to point out that here "C" means average. I'm not interested in the filter's self-esteem.

I get a lot of emails from Suzuki owners asking me what the secret best filter is. They're all trash. All of them. You are forced by Suzuki's brain-damaged specification to buy and use trash oil filters. There's now an alternative, you can buy an adaptor for $15 that allows you to use PL14610 or Supertech ST7317 filters, the same thing used by Honda, Yamaha and Kawasaki bikers.

I bought these filters with my own money, and as should be apparent, I got no use out of them in terms of filtering oil.

Type [2] filters for Suzukis

Filter Price Media p*d*h Sq.In. Drain Seal Mech. Media Comments
AMSOil
SMF 109
$8.75 45*.37*1.1 37 Nitrile Nitrile C B Advanced media, but not much of it. A flawed superior filter.
Emgo
10-55660
$6 61*.48*1.3 76 Nitrile Nitrile C C Good alternative to OEM
Emgo
10-55662
$7.75 35*.3*1.24 26 Nitrile Nitrile C B Advanced media, but not much of it. A flawed superior filter.
Fram
PH6018
$6 44*.49*1.77 76 Nitrile Nitrile F C Normal filter paper, and a decent amount of it. Cardboard end caps, Little prongy plastic bypass valve. Unconvincing anti-drainback valve. A study in how to make a filter on the cheap.
Hi-Flo
HF138
$5.50 49*.51*1.6 80 Nitrile Nitrile C* C An average filter at a competitive price.
J.C.Whitney
ZX063166P
$6 on order. . .
K&N 138 $12 62*.315*1.5259 Nitrile Nitrile C+* C Made by Hi Flo. Average filter with a $6 nut welded onto the end cap.
NAPA 1359
WIX 51359
$9 49*.365*.97 34 Nitrile Nitrile C C- Bypass filter added on, not built in. Filter media in short supply.
Parts Unlimited $9 50*.41*1.46 60 Nitrile Nitrile C C Average filter, high price.
Per-Form
J-509
Not tested at this time.
Purolator
ML16818
Not tested at this time.
STP SMO-18 $6 49*.38*1.3 48 Nitrile Nitrile C C- Filter media in short supply. Below average.
Suzuki
16510-03G00-X07
$12 59*.41*1.47 71 Silicon Nitrile B C A slightly better than average filter at a super-premium price.
VESRAH
vsf-3009
$11 on order. . .

* - I received an email from Suzuki of Victoria, informing me that a Hayabusa they took in for service showed no oil pressure. They found the cause was an aged anti-drainback valve on a Hi-Flo filter that would not open, thus cutting off all oil pressure to the entire engine.

oil filters opened
STP, Emgo 55662, Emgo 55660, Suzuki, Fram Oil Filters.

oil filters opened
K&N, Hi-Flo, Parts Unlimited, Napa Gold, AMSOil Oil Filters.

oil filters opened
Pure One, Bosch, SuperTech Oil Filters.

Type [5] Filters for Hondas, etc.

Filter Price Media p*d*h Sq.In. Drain Seal Mech. Media Comment
Bosch 3300 $6 49*.36*1 34 Nitrile Nitrile C B This is the smaller unit. Nice filter media, but not much of it.
Mobil-1
M1-108
$12 43*.39*.96 32 Silicon Nitrile B B This is the smaller unit. Nice filter media, but not much of it. This was a used filter, hence the color of the media.
Pure One
PL14610
$6 50*.39*2.36 92 Silicon Silicon A A This is how an oil filter should be made. The anti-drainback valve is double the thickness of any other here, and obviously seals very well. The media is the best available, and there's a lot of it. The bypass valve is made from a laser-cut piece of stainless steel, and just can't bind or jam.
SuperTech
ST7317
$2 33*.36*1.9 49 Nitrile Nitrile C B A better than average filter at a bargain price.